APA

Parker G. G., . (1971). The enrollment explosion: a half-century of attendance in U.S. colleges and universities. New York: School & Society Books.

Chicago

Parker Garland G, . 1971. The enrollment explosion: a half-century of attendance in U.S. colleges and universities. New York: School & Society Books.

Harvard

Parker G. G., . (1971). The enrollment explosion: a half-century of attendance in U.S. colleges and universities. New York: School & Society Books.

MLA

Parker Garland G, . The enrollment explosion: a half-century of attendance in U.S. colleges and universities. New York: School & Society Books. 1971.