APA Citation

Keen, D. (1994). Developing vocabulary skills (2nd ed.). Boston: Heinle.

Chicago Style Citation

Keen, Dennis. Developing Vocabulary Skills. 2nd ed. Boston: Heinle, 1994.

MLA Citation

Keen, Dennis. Developing Vocabulary Skills. 2nd ed. Boston: Heinle, 1994.

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