APA استشهاد

Heimler, C. H., & Price, J. (1974). Focus on physical science (2nd ed.). Charles E Merrill.

استشهاد بنمط شيكاغو

Heimler, Charles H., و Jack Price. Focus on Physical Science. 2nd ed. Ohio: Charles E Merrill, 1974.

MLA استشهاد

Heimler, Charles H., و Jack Price. Focus on Physical Science. 2nd ed. Charles E Merrill, 1974.