APA Citation

Hartnell, T., Hanny widjaja, C., & Manalu, W. (1988). (Cet. 5.). Jakarta: Gramedia.

Chicago Style Citation

Hartnell, Tim, C. Hanny widjaja, and Wasmen Manalu. . Cet. 5. Jakarta: Gramedia, 1988.

MLA Citation

Hartnell, Tim, C. Hanny widjaja, and Wasmen Manalu. . Cet. 5. Jakarta: Gramedia, 1988.

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