Gaya APA

Usman, . et al (2012). Giraffe, Jerapah: Hewan Tertinggi di dunia (The Tallest Animal in the World) . : .

Gaya MLA

Usman, . et al. "Giraffe, Jerapah: Hewan Tertinggi di dunia (The Tallest Animal in the World)". : , 2012. Text / Book.