APA

Rugg H. O., Shumaker A., . (1928). The child-centered school. New York: World Book.

Chicago

Rugg Harold Ordway, Shumaker Ann, . 1928. The child-centered school. New York: World Book.

Harvard

Rugg H. O., Shumaker A., . (1928). The child-centered school. New York: World Book.

MLA

Rugg Harold Ordway, Shumaker Ann, . The child-centered school. New York: World Book. 1928.