APA Citation

Sarwono, A. (2007). Danau Toba-The Beautiful Lake. PT. Elex Media Komputindo.

Chicago Style Citation

Sarwono, Aylawati. Danau Toba-The Beautiful Lake. PT. Elex Media Komputindo, 2007.

MLA Citation

Sarwono, Aylawati. Danau Toba-The Beautiful Lake. PT. Elex Media Komputindo, 2007.

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