This is a guide to using the American Psychological Association's referencing style. It is based on the publication manual of the American Psychological Association. An author. Two authors. Three to twenty authors. Twenty, Basic format for referencing a book. A basic reference list entry for an e-book that you retrieved from a library database without a DOI, in APA format should be the referencing style. This is a guide to using the American Psychological Association's referencing style. It is based on the Publication Manual, APA Reference Guide 7th Edition. Is this a book, are you sure you need to cite the entire book, not a chapter of the book, see the Books page and, APA Style 7th Edition Citation Guide: Books amp Ebooks. Book printed with a single author. Author's last name, first name and initial. Second initial if given. Year of, ~ The APA referencing style is an author-date style, so the in-text citation consists of the author and year of publication given in whole or in part in parentheses. Use only the author's last name followed by a comma and the year of publication. Include page, chapter or section numbers if you need to be specific, for example. When to cite the entire book: When the entire book was written by the same group of authors and the chapters were not written by different authors, then you consider the entire book as a single source and cite the entire book . If you use three different chapters from the same book, it only counts as one source – one book. Recommendations include Calibri, Arial, Lucida, Times New Roman, Georgia or Computer Modern, LaTeX. The reference list is double-spaced between each reference AND within the reference. A list of references is arranged alphabetically by author last name. Each reference appears on a new line. Translations. Pastoureau, M. 2018. Blue: The story of a color MI Cruse, Trans. Princeton University Press. Original work, Give details of the version you are reading including the translator and put the date of the original publication at the end in parentheses. APA Manual p. 301, s9.39. Place a, b, c etc. after the year. Letters are assigned in the reference list where references with the same first author last name are arranged alphabetically by title. The first reference listed uses a second usage b etc. If under press is used for the year, place a hyphen between press and the relevant letter, e.g. under press-c.