Citazione Stile APA (7a Edizione)

Keller, H. R. e. (1929). The reader's digest of books (New and greatly enl. ed.). Macmillan company.

Citazione stile Chigago Style (17a edizione)

Keller, Helen Rex ed. The Reader's Digest of Books. New and greatly enl. ed. New York: Macmillan company, 1929.

Citatione MLA (9a ed.)

Keller, Helen Rex ed. The Reader's Digest of Books. New and greatly enl. ed. Macmillan company, 1929.