Style de citation APA (7e éd.)

Fritsch, E. C. (1955). Science teaching aids for a stronger America. s.n.

Style de citation Chicago (17e éd.)

Fritsch, Emery C. Science Teaching Aids for a Stronger America. Illinois: s.n, 1955.

Style de citation MLA (9e éd.)

Fritsch, Emery C. Science Teaching Aids for a Stronger America. s.n, 1955.