Gaya APA

Cowan, M, K. (2012). Microbiology: A Systems Approach, Third Edition (3rd Edition). New York, USA: The McGraw-Hill Companies.

Gaya MLA

Cowan, Marjorie, Kelly. "Microbiology: A Systems Approach, Third Edition". 3rd Edition New York, USA: The McGraw-Hill Companies, 2012. Koleksi Elektronik.