Gaya APA

James, J., Kowa, F. (1998). Thinking In the Future Tense Berpikir ke Depan Leadership skills menyongsong milenium baru . Jakarta: PT Gramedia.

Gaya MLA

James, Jennifer., Kowa, Frans. "Thinking In the Future Tense Berpikir ke Depan Leadership skills menyongsong milenium baru". Jakarta: PT Gramedia, 1998. Text.