Gaya APA

Hupoyo, G., W., M, E, S. (1986). Graded Reading Series [Nonfiction - Stage 4]: The Boyhood of Ronggowarsito (Cet. 1.--). Jakarta: Gramedia.

Gaya MLA

Hupoyo, Gunawan., W., Maria, E., S.. "Graded Reading Series [Nonfiction - Stage 4]: The Boyhood of Ronggowarsito". Cet. 1.-- Jakarta: Gramedia, 1986. Text.