Citazione Stile APA (7a Edizione)

Ohlsen, M. M. (1955). Guidance: An introduction. Harcourt, Brace and Company.

Citazione stile Chigago Style (17a edizione)

Ohlsen, Merle M. Guidance: An Introduction. Nueva York: Harcourt, Brace and Company, 1955.

Citatione MLA (9a ed.)

Ohlsen, Merle M. Guidance: An Introduction. Harcourt, Brace and Company, 1955.