APA (7th ed.) Citation

Jurgen, H. (1984). Melacak alam. Angkasa.

Chicago Style (17th ed.) Citation

Jurgen, Hans. Melacak Alam. Angkasa, 1984.

MLA (8th ed.) Citation

Jurgen, Hans. Melacak Alam. Angkasa, 1984.

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