* [http://www.signaling-gateway.org Signaling Gateway] Free summaries of recent research and the [http://www.signaling-gateway.org/molecule/ Molecule Pages database].
* [http://pid.nci.nih.gov NCI-Nature Pathway Interaction Database]: authoritative information about signaling pathways in human cells.
* [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Search&db=books&doptcmdl=GenBookHL&term=%22Cell+signaling%22+AND+mboc4%5Bbook%5D+AND+373842%5Buid%5D&rid=mboc4.section.2743#2793 Cell Communication], Chapter 15 in ''[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Search&db=books&doptcmdl=GenBookHL&term=cell+biology+AND+mboc4%5Bbook%5D+AND+373693%5Buid%5D&rid=mboc4 Molecular Biology of the Cell]'' fourth edition, edited by Bruce Alberts (2002) published by Garland Science.
* [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Search&db=books&doptcmdl=GenBookHL&term=%22Cell+signaling%22+AND+cooper%5Bbook%5D+AND+166039%5Buid%5D&rid=cooper.chapter.2198 Cell Signaling], Chaلابايلبلبلبلللل://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Search&db=books&doptcmdl=GenBookHL&term=cell+biology+AND+cooper%5Bbook%5D+AND+165077%5Buid%5D&rid=cooper.chapter.89 The Cell - A Molecular Approach]'' second edition, by Geoffrey M. Cooper (2000) published by Sinauer Associates.
* [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Search&db=books&doptcmdl=GenBookHL&term=%22Cell+signaling%22+AND+mcb%5Bbook%5D+AND+107116%5Buid%5D&rid=mcb.chapter.5687 Cell-to-Cell Signaling], Chapter 20 in ''[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Search&db=books&doptcmdl=GenBookHL&term=cell+biology+AND+mcb%5Bbook%5D+AND+105032%5Buid%5D&rid=mcb.chapter.145 Molecular Cell Biology]'' fourth edition, edited by Harvey Lodish (2000) published by W. H. Freeman and Company.
