Box 61Books without page numbers

  • If all of the pages (not just the introductory pages) of a book in PDF (Portable Document Format) have no page numbers:
    • Count the total numbers of pages of the text
    • Follow the count total by "p."
    • Place the number and "p." in square brackets, such as [12 p.]
    • End page information with a period
      Example: [20 p.].
  • If the book is in HTML, XML, or other unpaginated format:
    • Count the number of screens, paragraphs, lines, or bytes, whichever is most practical, or print out the book and count the number of pages
    • Because screen size and type fonts vary, precede the total with the word "about" for all except the number of paragraphs
    • Place the count total and the measure used in square brackets
    • End with a period placed outside the closing bracket
      Examples:
      • [about 6 screens].
      • [about 23 p.].
      • [10 paragraphs].

From: Chapter 22, Books and Other Individual Titles on the Internet

Cover of Citing Medicine
Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers [Internet]. 2nd edition.
Patrias K, author; Wendling D, editor.
Bethesda (MD): National Library of Medicine (US); 2007-.

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.