1. Author: Include the author's last name.
2. Title: Write the title of the source in italics.
3. Edition and/or Version: If available, include the edition or version.
4. Date of Publication: If no publication date is available, use "n.d." (no date).
5. Paragraph Number or Heading: If the source is divided into paragraphs or sections, include the paragraph number or heading.
Example: (Author, _Title_, Edition/Version, Date, Paragraph/Heading)
Here are a few specific examples of in-text citations with no page numbers:
1. Single-Author Book without Page Numbers: (Smith, _Introduction to Psychology_, 2020, Chapter 5)
2. Article in a Journal without Page Numbers: (Johnson, _The Effects of Climate Change on Polar Bears_, n.d., Section 3)
3. Website without Page Numbers: (Greenpeace, _Protecting the Arctic_, 2021, Introduction)
Always check your referencing style guide (such as APA, MLA, or Chicago) for specific guidelines on citing sources with no page numbers.