Gaya APA

Vol.9, G, E, O, K. (1993). Grolier encyclopedia of knowledge Vol.9 / Grolier Incorporated . : .

Gaya MLA

Vol.9, Grolier, Encyclopedia, Of, Knowledge. "Grolier encyclopedia of knowledge Vol.9 / Grolier Incorporated". : , 1993. Tadris Bahasa Inggris.