APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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