APA

Blough G. O., Schwartz J., . (1969). Elementary school science and how to teach it. New York: Holt, Rinehart and Winston.

Chicago

Blough Glenn Orlando, Schwartz Julius, . 1969. Elementary school science and how to teach it. New York: Holt, Rinehart and Winston.

Harvard

Blough G. O., Schwartz J., . (1969). Elementary school science and how to teach it. New York: Holt, Rinehart and Winston.

MLA

Blough Glenn Orlando, Schwartz Julius, . Elementary school science and how to teach it. New York: Holt, Rinehart and Winston. 1969.