Brain ,Marshall. (2003). Berapakah berat bumi ? / Marshall Brain. Jakarta: Pakar Raya.
Chicago Style (17th ed.) CitationBrain ,Marshall. Berapakah Berat Bumi ? / Marshall Brain. Jakarta: Pakar Raya, 2003.
MLA (8th ed.) CitationBrain ,Marshall. Berapakah Berat Bumi ? / Marshall Brain. Jakarta: Pakar Raya, 2003.
Warning: These citations may not always be 100% accurate.