Gaya APA

9394. (1). : Grasindo.

Gaya Chicago

9394. Gembira Belajar Sains. : Grasindo, 1. .

Gaya MLA

9394. Gembira Belajar Sains. : Grasindo, 1. .

Gaya Turabian

9394. : Grasindo, 1. .