Darwin, C.R. (1859). On the Origin of Species. iBooks.
https://itunes.apple.com/WebObjects/MZStore.woa/wa/viewBook?id=361560384
Darwin, C.R. (1868). The Variation of Animals and Plants Under Domestication, Vol. 1. iBooks.
https://itun.es/us/a7JDE.l
Domyan, E.T., Guernsey, M.W., Kronenberg, Z., Krishnan, S., Boissy, R.E., Vickrey, A.I., Rodgers, C., Cassidy, P., Leachman, S.A., Fondon, J.W., Yandell, M. & Shapiro, M.D. (2014). Epistatic and combinatorial effects of pigmentary gene mutations in the domestic pigeon. Current Biology 24, 1-6. doi: 10.1016/j.cub.2014.01.020
Hearing, V.J. (2011). Determination of melanin synthetic pathways. Journal of Investigative Dermatology, 131, E8-E11. doi:
Hubbard, J.K., Uy, J.A.C., Hauber, M.E., Joekstra, H.E. & Safran, R.J. (2010). Vertebrate pigmentation: from underlying genes to adaptive function. Trends in Genetics 26, 5, 231-239. doi: 10.1016/j.tig.2010.02.002
Huntley, R.R. (1999). Ron Huntley's Rare Color Homing Pigeons. Retrieved nov 5, 2014, from
http://www.angelfire.com/ga/huntleyloft/Page1.html
Levi, W.M. (1965). The encyclopedia of pigeon breeds (2nd ed.). Sumber, SC: Levi Publishing Co.
Mumtaztic Pigeon Loft (n.d.). Retrieved Nov 5, 2014, from
http://mumtazticloft.com
Sell, A. (1994). Breeding and inheritance in pigeons. Hengersberg: Schober.
Shapiro, M.D. & Domyan, E.T. (2013). Quick Guide: Domestic Pigeons. Current Biology 23, R302-R303. doi: 10.1016/j.cub.2013.01.063
Shapiro, M.D., Kronenberg, Z., Li, C., Domyan, E.T., Pan, H., Campbell, M., Tan, H., Huff, C.D., Hu, H., Vickrey, A.I., Nielsen, S.C.A., Stringham, S.A., Hu, H., Willerslev, E., Gilbert, M.T.P., Yandell, M., Zhang, G. & Wang, J. (2013). Genomic diversity and evolution of the head crest in the rock pigeon. Science 339, 1063-1067. doi: 10.1126/science.1230422