Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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