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APA Citation Style, Seventh Edition

Section 10.2

In General:
  • You do not have to include database or archive information for works obtained through most academic research databases (see Section 9.30 of the Manual).
  • It is not necessary to note when you used an audiobook versus a book or an ebook when the content is the same (see Section 10.2 of the Manual).
General Format 
      In-Text Citation (Paraphrase): 
      (Author Surname, Year)
      In-Text Citation (Quotation):
      (Author Surname, Year, Page Number)
Author Surname, First Initial. Second Initial., & Author Surname, First Initial. Second Initial. (Year). Title of Book. Publisher Name. https:// DOI OR https:// URL of book (if applicable) 
NOTE: If the book has editors, list their names followed by "(Ed.)" OR "(Eds.)"  in the reference entry. 
       In-Text Citation (Paraphrase): 
       (Dubowski & Tanev, 2006)
       In-Text Citation (Quotation):
       (Dubowski & Tanev, 2006, p. 12)
Dubowski, J. J., & Tanev, S. (2006). Photon-based nanoscience and nanobiotechnology. Springer. 

DOIs (Section 9.35)

If a Digital Object Identifier (DOI) is provided on either a print or an electronic source, it should be included in the reference. A DOI is a unique alphanumeric string that is used to identify a specific source (often a journal article). Format these as a hyperlink with either "http://" or "https://".