Cita APA (7th ed.)

(1968). Staffing guidance programs / [by] George E. Hill.

Cita Chicago (17th ed.)

Staffing Guidance Programs / [by] George E. Hill. 1968.

Cita MLA (9th ed.)

Staffing Guidance Programs / [by] George E. Hill. 1968.

Atenció: Aquestes cites poden no estar 100% correctes.