APA

Boehm A. E., Weinberg R. A., . (1977). The classroom observer: a guide for developing observation skills. New York: Teachers College Press.

Chicago

Boehm Ann E, Weinberg Richard A, . 1977. The classroom observer: a guide for developing observation skills. New York: Teachers College Press.

Harvard

Boehm A. E., Weinberg R. A., . (1977). The classroom observer: a guide for developing observation skills. New York: Teachers College Press.

MLA

Boehm Ann E, Weinberg Richard A, . The classroom observer: a guide for developing observation skills. New York: Teachers College Press. 1977.