Gaya APA

PETERSON'S, ., Hammond, W, W. (2007). E-BOOK MASTER TOEFL WRITING SKILLS . : Peterson’s, a Nelnet company.

Gaya MLA

PETERSON'S, ., Hammond, Wallie, Walker. "E-BOOK MASTER TOEFL WRITING SKILLS". : Peterson’s, a Nelnet company, 2007. Text.