By cellular localization

 extracellular signaling

• cell-cell signaling
• cell-matrix signaling

 transmembrane signaling

 intracellualr signaling

• cytoplasmic signaling
• nuclear signaling

Books

 Bhalla US. Models of cell signaling pathways. Curr Opin Genet Dev. 2004 Aug;14(4):375-81. PMID: #15261653#

 Signal Transduction and Human Disease. by Toren Finkel (Editor), J. Silvio Gutkind (Editor). Hardcover: 488 pages ; Dimensions (in inches): 1.08 x 10.56 x 6.72. Publisher: Wiley-Liss; (May 23, 2003). ISBN: 0471020117

 Signal Transduction. by B. D. Gomperts, Ijsbrand M. Kramer, Peter E. R. Tatham, Bastien D. Gomperts, Bastien Gomperts, Ijsbrand Kramer, Peter Tatham. Hardcover: 420 pages ; Dimensions (in inches): 1.18 x 10.04 x 7.60. Publisher: Academic Press; (March 2002). ISBN: 0122896319

 The Biochemistry of Cell Signalling. by E. J. M. Helmreich, Ernst J. M. Helmreich. Paperback: 328 pages ; Dimensions (in inches): 9.50 x 0.75 x 6.75. Publisher: Oxford University Press; (September 1, 2001). ISBN: 0198508204

 Genes & Signals. by Mark Ptashne, Alexander Gann. Paperback: 208 pages ; Dimensions (in inches): 0.60 x 9.06 x 5.98. Publisher: Cold Spring Harbor Laboratory Press; 1st edition (November 13, 2001). ISBN: 0879696338

References

 Pires-daSilva A, Sommer RJ. The evolution of signalling pathways in animal development. Nat Rev Genet. 2003 Jan ;4(1):39-49. PMID : #12509752#

 Pirson I, Fortemaison N, Jacobs C, Dremier S, Dumont JE, Maenhaut C. The visual display of regulatory information and networks. Trends Cell Biol. 2000 Oct;10(10):404-8. PMID: #10998591#