↑« Completion of the Phonotypic Alphabet », The Phonotypic Journal, 5 Nelson Place, Bath, Phonographic Institution, vol. 4, no 42, juin 1845, p. 105-106
↑« Extension of the Phonotypic Alphabet », The Phonotypic Journal, 5 Nelson Place, Bath, Phonographic Institution, vol. 4, no 43, juin 1845, p. 121-123
http://www.unifon.org
Third Revised Proposal to encode characters for the English Phonotypic Alphabet (EPA) in the UCS, Международная организация по стандартизации, 2011.
↑The American Phonetic Dictionary of the English Language. Designed by Nathanael Storrs, compiled by Dan S. Smalley. Cincinnati 1855.