Cita APA (7a ed.)

Krapp, G. P. (1960). The English language in America. Frederick Ungar Publishing.

Cita Chicago Style (17a ed.)

Krapp, George Philip. The English Language in America. New York: Frederick Ungar Publishing, 1960.

Cita MLA (9a ed.)

Krapp, George Philip. The English Language in America. Frederick Ungar Publishing, 1960.