APA Citation

Astuti, S. I. (2009). Simple step to toefl. Hi-fest Publishing.

Chicago Style Citation

Astuti, Santi Indra. Simple Step to Toefl. Hi-fest Publishing, 2009.

MLA Citation

Astuti, Santi Indra. Simple Step to Toefl. Hi-fest Publishing, 2009.

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