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Wamitila, Kyallo Wadi (2003), Kamusi ya Fasihi - Istilahi na Nadharia, Nairobi: Focus Publications. ISBN 9966-882-79-6
Samwel, Method, Selemani Amina na Akech Kabiero (2013), "Ushairi wa Kiswahili: Nadharia, Mifano na Mwongozo kwa Walimu wa Kiswahili," Dar es Salaam: MEVELI Publishers. ISBN: 978-9987-9735-0-7