APA Style

Astuti, Santi Indra. (2008). Simple Step to Toefl (Cet. 1.). Jakarta: Hi-Fest Publishing.

Chicago Style

Astuti, Santi Indra. Simple Step to Toefl. Cet. 1. Jakarta: Hi-Fest Publishing, 2008. .

MLA Style

Astuti, Santi Indra. Simple Step to Toefl. Cet. 1. Jakarta: Hi-Fest Publishing, 2008. .

Turabian Style

Astuti, Santi Indra. Simple Step to Toefl. Cet. 1. Jakarta: Hi-Fest Publishing, 2008. .