Gaya APA

Widadi, S. (2006). Geography Book 1 For Senior High School Students (2006) (Cet. ke: 1). Semarang: English Immersion Program Education And Culture Servce Central Java Province.

Gaya MLA

Widadi, S.H. "Geography Book 1 For Senior High School Students (2006)". Cet. ke: 1 Semarang: English Immersion Program Education And Culture Servce Central Java Province, 2006. Text.