Pfeiffer, J. W. (1989). The 1989 annual: Developing human resources (18th annual.). University Associates.
Citazione stile Chigago Style (17a edizione)Pfeiffer, J. William. The 1989 Annual: Developing Human Resources. 18th annual. San Diego, Calif.: University Associates, 1989.
Citatione MLA (8a ed.)Pfeiffer, J. William. The 1989 Annual: Developing Human Resources. 18th annual. University Associates, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.