Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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