Gaya APA

Silaban, S. (2015). Guru di atas Garis (Cet. 1, 2015). Yogyakarta: Scritto Books Publisher.

Gaya MLA

Silaban, Sabam. "Guru di atas Garis". Cet. 1, 2015 Yogyakarta: Scritto Books Publisher, 2015. Text.