Gaya APA

Leo, Sutanto. (2013). A challenging book to practice teaching in English (Ed. 1). Yogyakarta: Andi Offset.

Gaya Chicago

Leo, Sutanto. A challenging book to practice teaching in English. Ed. 1 Yogyakarta: Andi Offset, 2013. Text.

Gaya MLA

Leo, Sutanto. A challenging book to practice teaching in English. Ed. 1 Yogyakarta: Andi Offset, 2013. Text.

Gaya Turabian

Leo, Sutanto. A challenging book to practice teaching in English. Ed. 1 Yogyakarta: Andi Offset, 2013. Print.