APA (7th ed.) Citation

KNIGHT, J. F. (1989). Usahakan Jantung Sehat. Indonesia Publishing House.

Chicago Style (17th ed.) Citation

KNIGHT, John F. Usahakan Jantung Sehat. Indonesia Publishing House, 1989.

MLA (8th ed.) Citation

KNIGHT, John F. Usahakan Jantung Sehat. Indonesia Publishing House, 1989.

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