APA (7th ed.) Citation

Sherris, J. C., & Ryan, K. J. Sherris microbiology textstack [computer file]. Keyboard, c1995.

Chicago Style (17th ed.) Citation

Sherris, John C., and Kenneth J. Ryan. Sherris Microbiology Textstack [computer File]. Blue Bell, PA: Keyboard, c1995.

MLA (9th ed.) Citation

Sherris, John C., and Kenneth J. Ryan. Sherris Microbiology Textstack [computer File]. Keyboard, c1995.