APA استشهاد

Wingfield, B., & Berry Janice. (2004). Retaining your employees. Viva Books.

استشهاد بنمط شيكاغو

Wingfield, Barb, و Berry Janice. Retaining Your Employees. N w Delhi: Viva Books, 2004.

MLA استشهاد

Wingfield, Barb, و Berry Janice. Retaining Your Employees. Viva Books, 2004.