Williams, B. (2005). Ensiklopdia Tanya & Jawab: Bumi Kita. Pakar Raya.
Chicago Style (17th ed.) CitationWilliams, Brian. Ensiklopdia Tanya & Jawab: Bumi Kita. Pakar Raya, 2005.
MLA (8th ed.) CitationWilliams, Brian. Ensiklopdia Tanya & Jawab: Bumi Kita. Pakar Raya, 2005.
Warning: These citations may not always be 100% accurate.