APA

Petroni F. A., Hirsch E. A., . (19711970). Two, four, six, eight, when you gonna integrate?. New York: Behavioral Publications.

Chicago

Petroni Frank A, Hirsch Ernest A, . 19711970. Two, four, six, eight, when you gonna integrate?. New York: Behavioral Publications.

Harvard

Petroni F. A., Hirsch E. A., . (19711970). Two, four, six, eight, when you gonna integrate?. New York: Behavioral Publications.

MLA

Petroni Frank A, Hirsch Ernest A, . Two, four, six, eight, when you gonna integrate?. New York: Behavioral Publications. 19711970.