APA Citation

Johan Untung, & Sitorus, H. (1999). Nonstop Natal. Jakarta: Barcelona.

Chicago Style Citation

Johan Untung, and Herty Sitorus. Nonstop Natal. Jakarta: Barcelona, 1999.

MLA Citation

Johan Untung, and Herty Sitorus. Nonstop Natal. Jakarta: Barcelona, 1999.

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