Gaya APA

GEOGRAPHIC, N. (2007). NATIONAL GEOGRAPHIC : Big Bad Bizarre Dinosaurs. VOL. 212 NO. 6. DECEMBER 2007 (VOL. 212 NO. 6. DECEMBER 2007). WASHINGTON. D.C.: NATIONAL GEOGRAPHIC.

Gaya MLA

GEOGRAPHIC, NATIONAL. "NATIONAL GEOGRAPHIC : Big Bad Bizarre Dinosaurs. VOL. 212 NO. 6. DECEMBER 2007". VOL. 212 NO. 6. DECEMBER 2007 WASHINGTON. D.C.: NATIONAL GEOGRAPHIC, 2007. Koleksi Khusus.