APA

Olson L., . (1971). Classroom-tested techniques for elementary teachers. New York: Center for Applied Research in Education.

Chicago

Olson Lynn, . 1971. Classroom-tested techniques for elementary teachers. New York: Center for Applied Research in Education.

Harvard

Olson L., . (1971). Classroom-tested techniques for elementary teachers. New York: Center for Applied Research in Education.

MLA

Olson Lynn, . Classroom-tested techniques for elementary teachers. New York: Center for Applied Research in Education. 1971.