Gaya APA

Grolier Business Library. (2001). Wanchai: GROLIER INTERNATIONAL.

Gaya Chicago

Grolier Business Library. . Wanchai: GROLIER INTERNATIONAL, 2001. .

Gaya MLA

Grolier Business Library. . Wanchai: GROLIER INTERNATIONAL, 2001. .

Gaya Turabian

Grolier Business Library. Wanchai: GROLIER INTERNATIONAL, 2001. .