APA引文

Willock, C. (1974). Africa's rift valley. Time-Life Books.

Chicago Edition Citation

Willock, Colin. Africa's Rift Valley. Amsterdam: Time-Life Books, 1974.

MLA引文

Willock, Colin. Africa's Rift Valley. Time-Life Books, 1974.

警告：這些引文格式不一定是100％准確.