SUGIARTO, T. (2008). YOUR GREAT SUCCESS STARTS FROM NOW. PT Gramedia Pustaka Utama.
Chicago Style aipamenaSUGIARTO, THOMAS. YOUR GREAT SUCCESS STARTS FROM NOW. PT Gramedia Pustaka Utama, 2008.
MLA aipamenaSUGIARTO, THOMAS. YOUR GREAT SUCCESS STARTS FROM NOW. PT Gramedia Pustaka Utama, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.