Cita APA

Hopper, V. F. (1970). 1001 pitfalls in english grammar spelling and usage. New York: Barron's Educational Series.

Citación estilo Chicago

Hopper, Vicent F. 1001 Pitfalls in English Grammar Spelling and Usage. New York: Barron's Educational Series, 1970.

Cita MLA

Hopper, Vicent F. 1001 Pitfalls in English Grammar Spelling and Usage. New York: Barron's Educational Series, 1970.

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