APA (7th ed.) Citation

Keller, H. R. (1959). The Reader's digest of books (New and greatly enl. ed.). Macmillan.

Chicago Style (17th ed.) Citation

Keller, Helen Rex. The Reader's Digest of Books. New and greatly enl. ed. New York: Macmillan, 1959.

MLA (9th ed.) Citation

Keller, Helen Rex. The Reader's Digest of Books. New and greatly enl. ed. Macmillan, 1959.