APA引文

Wellens, S. J. Houghton Mifflin English grammar and composition. Houghton Mifflin Company.

Chicago Style (17th ed.) Citation

Wellens, Sandra J. Houghton Mifflin English Grammar and Composition. Houghton Mifflin Company.

MLA引文

Wellens, Sandra J. Houghton Mifflin English Grammar and Composition. Houghton Mifflin Company.

警告：這些引文格式不一定是100％准確.