APA (7th ed.) Citation

SIREGAR, S., & WIRAMIHARJA, S. D. (2012). ASTRONOMI. Gema Insani Press.

Chicago Style (17th ed.) Citation

SIREGAR, SURYADI, and SUHARJA D. WIRAMIHARJA. ASTRONOMI. Gema Insani Press, 2012.

MLA (8th ed.) Citation

SIREGAR, SURYADI, and SUHARJA D. WIRAMIHARJA. ASTRONOMI. Gema Insani Press, 2012.

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