found: Routledge handbook of scripts and alphabets, 2013:page 2 ("an alphabet is a system in which all phonemes, both vowels and consonants, are given their own symbols of equal value")
found: Oxford English Dictionary online, viewed Sept. 26, 2022:(script: a system of writing using a particular alphabet)
found: Writing and script, 2009:page 2 ("this book introduces the origins of writing; the routes via which writing spread and developed into hundreds of scripts...")
found: The world's writing systems, 1996:page 9 ("A. A. Hill (1967) classifies scripts according to their relation to the units of the different "levels" at which language is studied in descriptive linguistics: discourse systems, morphemic systems, and phonemic systems.")
