Gaya APA

Setiyanta, Y, M., Suryono, Y. (1998). Graded Reading Series [Stage 1]: Bat's Deed (Cet. 1. --). Yogyakarta: Kanisius.

Gaya MLA

Setiyanta, Y., Mei., Suryono, Yulius. "Graded Reading Series [Stage 1]: Bat's Deed". Cet. 1. -- Yogyakarta: Kanisius, 1998. Text.