APA (7th ed.) Citation

Copperud, R. (1961). Words on paper. Hawthorn Books.

Chicago Style (17th ed.) Citation

Copperud, Roy. Words on Paper. New York, Estados Unidos: Hawthorn Books, 1961.

MLA (9th ed.) Citation

Copperud, Roy. Words on Paper. Hawthorn Books, 1961.

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