Utama, Y. (2012). Becoming A Genius Speaker. Gramedia.
Chicago Style (17th ed.) CitationUtama, Yasier. Becoming A Genius Speaker. Gramedia, 2012.
Cita MLAUtama, Yasier. Becoming A Genius Speaker. Gramedia, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.