APA Citation

DUFFY, T. (1989). Four software tools plus: Applications and concepts. Belmont, Calif: Wadsworth.

Chicago Style Citation

DUFFY, Tim. Four Software Tools Plus: Applications and Concepts. Belmont, Calif: Wadsworth, 1989.

MLA Citation

DUFFY, Tim. Four Software Tools Plus: Applications and Concepts. Belmont, Calif: Wadsworth, 1989.

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