APA (7th ed.) Citation

Okara, G., & Ravenscroft, A. (1970). The voice.

Chicago Style (17th ed.) Citation

Okara, Gabriel, and Arthur Ravenscroft. The Voice. London : 4b Heinemann, 1970.

MLA (9th ed.) Citation

Okara, Gabriel, and Arthur Ravenscroft. The Voice. 1970.

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