Gaya APA

P., S, P, S. (1987). Graded Reading Series Fiction [Stage 1]: Putri and the Snake (Cet. 1.--). Jakarta: Gramedia.

Gaya MLA

P., Sikun, Pribadi, S.. "Graded Reading Series Fiction [Stage 1]: Putri and the Snake". Cet. 1.-- Jakarta: Gramedia, 1987. Text.