Gaya APA

Krishna, N., Lucky, . (2011). Hafalan praktis 16 tenses sistem 16 jam (Cet. 2). Yogyakarta: Cakrawala.

Gaya MLA

Krishna, Nien., Lucky, . "Hafalan praktis 16 tenses sistem 16 jam". Cet. 2 Yogyakarta: Cakrawala, 2011. Text.