COOPER, C., & ACHMADI, S. (2000). jendela iptek 4: Materi/penerjemah Tuntun Sinaga. Balai Pustaka.
Chicago Style (17th ed.) CitationCOOPER, Christopher, and Suminar ACHMADI. Jendela Iptek 4: Materi/penerjemah Tuntun Sinaga. Jakarta: Balai Pustaka, 2000.
MLA (9th ed.) CitationCOOPER, Christopher, and Suminar ACHMADI. Jendela Iptek 4: Materi/penerjemah Tuntun Sinaga. Balai Pustaka, 2000.
Warning: These citations may not always be 100% accurate.