APA (7th ed.) Citation

Tobing, N. L. 9 Seks Pranikah. Grafindo.

Chicago Style (17th ed.) Citation

Tobing, Naek L. 9 Seks Pranikah. Grafindo.

MLA (8th ed.) Citation

Tobing, Naek L. 9 Seks Pranikah. Grafindo.

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