APA

Cummings H., . (1949). Improving human relations through classroom, school, and community activities. Washington: Natinal Council for the Social Studies.

Chicago

Cummings Howard, . 1949. Improving human relations through classroom, school, and community activities. Washington: Natinal Council for the Social Studies.

Harvard

Cummings H., . (1949). Improving human relations through classroom, school, and community activities. Washington: Natinal Council for the Social Studies.

MLA

Cummings Howard, . Improving human relations through classroom, school, and community activities. Washington: Natinal Council for the Social Studies. 1949.