APA (7th ed.) Citation

Peck, C. W. (1969). An acoustic Investigation of the intonation of American English.

Chicago Style (17th ed.) Citation

Peck, Charles W. An Acoustic Investigation of the Intonation of American English. 1969.

MLA (9th ed.) Citation

Peck, Charles W. An Acoustic Investigation of the Intonation of American English. 1969.

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