Gaya APA

Santosa, B. (1987). Efficient English Lesson [Jilid 1a]: for SMPT Semester 1 (Cet. 1.--). Klaten: Nindita.

Gaya MLA

Santosa, Budhi. "Efficient English Lesson [Jilid 1a]: for SMPT Semester 1". Cet. 1.-- Klaten: Nindita, 1987. Text.