APA (7th ed.) Citation

Simanungkalit, I. (2007). Think, Tinka! GagasMedia.

Chicago Style (17th ed.) Citation

Simanungkalit, Ivana. Think, Tinka! GagasMedia, 2007.

MLA (8th ed.) Citation

Simanungkalit, Ivana. Think, Tinka! GagasMedia, 2007.

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