Gaya APA

Yahya, H. (2009.). Rahasia di Balik Materi (The Scret Beyond Matter) . : PT. Nada Cipta Raya,.

Gaya MLA

Yahya, Harun. "Rahasia di Balik Materi (The Scret Beyond Matter)". : PT. Nada Cipta Raya,, 2009.. .