Gaya APA

Claybourne, A., Treays, G, D, R. (2007). Ensiklopedia planet bumi: link internet (Cet.1). Jakarta: .

Gaya MLA

Claybourne, Anna., Treays, Gillian, Doherty,, Rebecca. "Ensiklopedia planet bumi: link internet". Cet.1 Jakarta: , 2007. Text.