Gaya APA

Robert, S, H. (1986). [Tough times never last, but tuogh people do!. Bahasa Indonesia] Keuletan kunci keberhasilan (Cet. 1). Jakarta: Gunung Mulia.

Gaya MLA

Robert, Schuller, H.. "[Tough times never last, but tuogh people do!. Bahasa Indonesia] Keuletan kunci keberhasilan". Cet. 1 Jakarta: Gunung Mulia, 1986. Text.