Cita APA

Zinsser, W. (1995). On writing well: An informal guide to writing nonfiction (5th ed.). N.Y.: Harper Collins college publishers.

Chicago Style Citation

Zinsser, William. On Writing Well: An Informal Guide to Writing Nonfiction. 5th ed. N.Y.: Harper Collins college publishers, 1995.

Cita MLA

Zinsser, William. On Writing Well: An Informal Guide to Writing Nonfiction. 5th ed. N.Y.: Harper Collins college publishers, 1995.