Cita APA (7a ed.)

Schein, E. H. (2009). Helping: How to offer, give, and receive help. Berrett-Koehler Pub.

Cita Chicago Style (17a ed.)

Schein, Edgar H. Helping: How to Offer, Give, and Receive Help. San Francisco: Berrett-Koehler Pub, 2009.

Cita MLA (9a ed.)

Schein, Edgar H. Helping: How to Offer, Give, and Receive Help. Berrett-Koehler Pub, 2009.