APA (7th ed.) Citation

Kreiken, E., & Iskandar, R. Ilmu alam. Versluys.

Chicago Style (17th ed.) Citation

Kreiken, E.A, and R.S Iskandar. Ilmu Alam. Versluys.

MLA (8th ed.) Citation

Kreiken, E.A, and R.S Iskandar. Ilmu Alam. Versluys.

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