APA

Gronlund N. E., . (1959). Sociometry in the classroom. New York: Harper.

Chicago

Gronlund Norman Edward, . 1959. Sociometry in the classroom. New York: Harper.

Harvard

Gronlund N. E., . (1959). Sociometry in the classroom. New York: Harper.

MLA

Gronlund Norman Edward, . Sociometry in the classroom. New York: Harper. 1959.