CEC—Progress and Development.

MLA

Geer, William C. “CEC—Progress and Development.” Exceptional Children, vol. 34, no. 10, Summer 1968, pp. 733–38. EBSCOhost, https://doi.org/10.1177/001440296803401002.

APA

Geer, W. C. (1968). CEC—Progress and Development. Exceptional Children, 34(10), 733–738. https://doi.org/10.1177/001440296803401002

Chicago

Geer, William C. 1968. “CEC—Progress and Development.” Exceptional Children 34 (10): 733–38. doi:10.1177/001440296803401002.