Atlas, Ron.  Handbook of Microbiological Media.  pp 443, 850.

Cascade Fresh Yogurt Company.  Available:  http://www.cascadefresh.com/cultures.html#cult5

“Enrichment Culture.”  Available:
http://www.clt.astate.edu/dgilmore/Research%20students/enrichment_culture.htm

“ENVE 301: Environmental Microbiology :Introduction: Overview and History of Microbiology.”  Available:
http://www.personal.psu.edu/faculty/k/h/khb4/enve301/301introand%20history/enve301introlecture.html

Garro, Marisa S., G. F. de Valdez, Guillermo Oliver, G. S. de Giori1.  "Growth characteristics and fermentation products of Streptococcus salivarius subsp. thermophilus, Lactobacillus casei and L . fermentum in soymilk."  Volume 206 Issue 1 (1998) pp 72-75. Jan 1998.  Available: http://link.springer.de/search.htm

Gerhardt.  Manual Methods for General Microbiology.

Microscopy of Food.  Available:  http://anka.livstek.lth.se:2080/microscopy/f-yogurt.htm

“Significant Events Of The Last 125 Years”  Available:
http://www.asmusa.org/mbrsrc/archive/SIGNIFICANT.htm
 

Stoneyfield Dairy Company.  Available:  http://www.stoneyfield.com

Tortora, Funke, Case.  Microbiology: An Introduction.  2001. p 777.
http://www.africabio.com/rainbow/2.html

http://www.calpoly.edu/~dptc/application/newsletterPDF/V2N8.pdf.