Web source: The Tricarboxylic Acid Cycle

Citric acid cycle

http://www.chemistrydaily.com/chemistry/Citric_Acid_Cycle

Citric Acid Cycle (from About.com)

http://chemistry.about.com/od/biochemistry/ss/citricacidcycle.htm

Krebs cycle, citric acid cycle or tricarboxylic acid cycle

http://www.biotopics.co.uk/a2/TCAcycle.html

Overview of the TCA cycle
http://www.accessexcellence.org/AB/GG/citric_Cycle_a.html

References, tricarboxylic acid cycle

http://www.hort.purdue.edu/rhodcv/hort640c/referen/tca.htm

TCA cycle inputs, reactions, and control
http://www.chem.wsu.edu/Chem102/102-CitrAcCycOxPhos.html

The Citric Acid Cycle

http://people.unt.edu/~hds0006/tca/

Tricarboxylic Acid Cycle (Quizzes)

http://faculty.une.edu/com/courses/bionut/distbio/obj-512/Chap20.htm

The TCA cycle in 3D
http://www.gwu.edu/~mpb/citric3d.htm