APA (7th ed.) Citation

Schulz, B. (2006). Mengapa Langit Biru? GRAMEDIA.

Chicago Style (17th ed.) Citation

Schulz, Bernhard. Mengapa Langit Biru? GRAMEDIA, 2006.

MLA (8th ed.) Citation

Schulz, Bernhard. Mengapa Langit Biru? GRAMEDIA, 2006.

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