APA引文

Walidi. (2006). Step by Step to Speak English. Citra Aji Parama.

Chicago Style Citation

Walidi. Step By Step to Speak English. Citra Aji Parama, 2006.

MLA引文

Walidi. Step By Step to Speak English. Citra Aji Parama, 2006.

警告：這些引文格式不一定是100％准確.