General textbooks
Principles of Electron Spin Resonance, Atherton N.M., Ellis Horwood 1993.
Electron Paramagnetic Resonance: Elementary Theory and Practical Applications, Weil J.A., Bolton J.R., Wertz J.E., Wiley Interscience 1994.
Electron Paramagnetic Resonance: A Practitioners Toolkit, Brustolon M. R., Giamello E., Editors, Wiley 2009.
Principles of Pulse Electron Paramagnetic Resonance, Schweiger A., Jeschke G., Oxford University Press 2001.
Electron Spin Resonance: A Comprehensive Treatise on Experimental Techniques, Poole Charles P., Dover Publications 1997
Applications
Biological Magnetic Resonance, Different Editors, Springer
Principles and Applications of ESR Spectroscopy, Lund A., Shiotani M., Shimada S., Springer-Verlag 2011
EPR Imaging and Its in Vivo Application, Yokoyama Hidekatsu, Nova Science Pub. 2009
Electron Spin Resonance and Related Phenomena in Low-Dimensional Structures, Fanciulli M., Springer 2008
EPR of Exchange Coupled Systems, Bencini A., Gatteschi D., Springer-Verlag 1990
Electron Paramagnetic Resonance of Transition Metal Ions Abragam, A.; Bleaney, B. Dover Publications 1986
Transition Ion Electron Paramagnetic Resonance, Pilbrow J.R., Oxford 1990