Gaya APA

W., L. (1987). Builp up your english reading skill. Readings prepared for english as foreign language in three levels (1987). : Yogyakarta : Kanisius,.

Gaya MLA

W., Lukito. "Builp up your english reading skill. Readings prepared for english as foreign language in three levels". 1987 : Yogyakarta : Kanisius,, 1987. Text.