Gaya APA

Richter, C. et al (1957). Reader's digest condensed books [vol. 3 1957 summer selections] (Ed. 1). New York: The Reader's Digest Association.

Gaya MLA

Richter, Conrad. et al. "Reader's digest condensed books [vol. 3 1957 summer selections]". Ed. 1 New York: The Reader's Digest Association, 1957. Text.