APA Citation

Grolier International, I. (1999). Ilmu Pengetahuan Populer 5. PT Widyadara.

Chicago Style Citation

Grolier International, Inc. Ilmu Pengetahuan Populer 5. PT Widyadara, 1999.

MLA Citation

Grolier International, Inc. Ilmu Pengetahuan Populer 5. PT Widyadara, 1999.

Warning: These citations may not always be 100% accurate.