Gaya APA

Gregory, J, M. (2018). 7 Hukum Mengajar ( The Seven Laws Of Teaching ) . Malang: Penerbit Gandum Mas.

Gaya MLA

Gregory, John, Milton. "7 Hukum Mengajar ( The Seven Laws Of Teaching )". Malang: Penerbit Gandum Mas, 2018. Text.