Citazione Stile APA (7a Edizione)

Certo, S. C. (1995). Human relations today: Concepts and skills. Irwin.

Citazione stile Chigago Style (17a edizione)

Certo, Samuel C. Human Relations Today: Concepts and Skills. Chicago: Irwin, 1995.

Citatione MLA (9a ed.)

Certo, Samuel C. Human Relations Today: Concepts and Skills. Irwin, 1995.