APA (7th ed.) Citation

Gage, S. H. (1941). The microscope (17th ed., rev.). Comstock publishing company, inc..

Chicago Style (17th ed.) Citation

Gage, Simon Henry. The Microscope. 17th ed., rev. Ithaca, N.Y.: Comstock publishing company, inc., 1941.

MLA (9th ed.) Citation

Gage, Simon Henry. The Microscope. 17th ed., rev. Comstock publishing company, inc., 1941.