APA引文

Sitorus, L. (2004). WINDOW ON THE WORLD English for SMA Year 1. Erlangga.

Chicago Style (17th ed.) Citation

Sitorus, Lungguk. WINDOW ON THE WORLD English for SMA Year 1. Erlangga, 2004.

MLA引文

Sitorus, Lungguk. WINDOW ON THE WORLD English for SMA Year 1. Erlangga, 2004.

警告：這些引文格式不一定是100％准確.