An interview is not considered recoverable data, so no reference to this is provided in the reference list. You may, however, cite the interview within the text as a personal communication.

A digital object identifier (DOI) is a unique alphanumeric string assigned by a registration agency (the International DOI Foundation) to identify content and provide a persistent link to its location on the Internet.

Use secondary sources sparingly, for instance, when the original work is out of print, unavailable through usual sources, or not available in English. Give the secondary source in the reference list; in text, name the original work and give a citation for the secondary source.

Because the material does not include page numbers, you can include any of the following in the text to cite the quotation (from pp. 170–171 of the Publication Manual):

Provides APA Style guidelines on when to use a retrieval date in citations.

The requirements of a reference list are that all references cited in the text of a paper must be listed alphabetically by first author's last name in the list of references and that all references listed must be cited within the text.

How do you cite an entire website (but not a specific document on that site)?

If the periodical does not use volume numbers, include pp. before the page numbers so the reader will understand that the numbers refer to pagination. Use p. if the source is a page or less long. For example, precede page numbers for newspaper articles and book chapters with p. or pp.

If an article appears on discontinuous pages, give all page numbers, and separate the numbers with a comma (e.g., pp. B1, B3, B5–B7).