[...] a system of written symbols which provides one sign for each phoneme of the language we are recording. Such a set of symbols is a 'phonetic alphabet' [...]
- Bloomfield (1935), a pag.85

Most phonetic alphabets are modifications of the traditional alphabet.They supplement the ordinary letters by such devices as small capitals, letters of the Greek alphabet, distorted forms of conventional letters, and letters with little marks, 'diacritical signs', attached to them [...]
- Bloomfield (1935), a pag.86