Cita APA (7th ed.)
Zinsser, W. (1998). On writing well: An informal guide to writing nonfiction (6th ed.). Harpercollins.
Cita Chicago (17th ed.)
Zinsser, William. On Writing Well: An Informal Guide to Writing Nonfiction. 6th ed. New York: Harpercollins, 1998.
Cita MLA (9th ed.)
Zinsser, William. On Writing Well: An Informal Guide to Writing Nonfiction. 6th ed. Harpercollins, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.