Gaya APA

Conrad, J. (2005). Heart of darkness : webster's German thesaurus edition for ESL, EFL, ELP, TOEFL, TOEIC, and AP Test Preparation . Amerika: ICON Group Intrnaional, Inc.

Gaya MLA

Conrad, Joseph. "Heart of darkness : webster's German thesaurus edition for ESL, EFL, ELP, TOEFL, TOEIC, and AP Test Preparation". Amerika: ICON Group Intrnaional, Inc, 2005. Text.