Gaya APA

Walker, D., Sorkin, S. (2011). A-HA! Performance building and managing a self-motivated workforce (Cet. 1). Jakarta Pusat: Penerbit PPM.

Gaya MLA

Walker, Douglas., Sorkin, Stephen. "A-HA! Performance building and managing a self-motivated workforce". Cet. 1 Jakarta Pusat: Penerbit PPM, 2011. Text.