Gaya APA

Vincent, P., Wiryadi, R. (1998). [The power of positive thinking. Bahas Indonesia] Kekuatan berpikir positif bagi muda-mudi . Jakarta: Professional Books.

Gaya MLA

Vincent, Peale,Norman., Wiryadi, Rita. "[The power of positive thinking. Bahas Indonesia] Kekuatan berpikir positif bagi muda-mudi". Jakarta: Professional Books, 1998. Text.