Citazione Stile APA (7a Edizione)

Greenleaf, W. J. (1955). Occupations and careers. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Greenleaf, Walter James. Occupations and Careers. Nueva York: McGraw-Hill, 1955.

Citatione MLA (9a ed.)

Greenleaf, Walter James. Occupations and Careers. McGraw-Hill, 1955.