Janice Harper: Endangered Species: Health, Illness, and Death Among Madagascar’s People of the Forest. Carolina Academic Press 2002: S. 30, 106–107, 127–129. ArchivlinkISBN 978-0-89089-238-1
Janice Harper: Endangered Species: Health, Illness, and Death Among Madagascar’s People of the Forest. Carolina Academic Press 2002: S. 105–107. ISBN 978-0-89089-238-1 via: org
Conrad Keller: Madagascar, Mauritius and Other East-African Islands. S. Sonnenschein 1901: S. 90–91. via: archive.org
William Ellis: History of Madagascar. Fisher 1838: S. 164. via: archive.org
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Giulio Cipollone: Christianisme et droits de l’homme à Madagascar. KARTHALA Editions, Paris 2008: S. 53–54. google booksISBN 978-2-8111-5087-7
Steven L. Danver: Native Peoples of the World: An Encyclopedia of Groups, Cultures and Contemporary Issues:S. 61. (google books) Routledge 2015. ISBN 978-1-317-46400-6, Quote: „Historically, Merina had the most stratified caste system in Africa, divided into three distinct categories: nobles (Andriana), freemen (Hova), and slaves (Andevo ). These three castes were further divided into subclasses.“
Sandra Evers: Constructing History, Culture and Inequality: The Betsileo in the Extreme Southern Highlands of Madagascar. BRILL Academic 2002: S. 2, 40–42. google booksISBN 90-04-12460-8
Edward A. Alpers: Ivory and Slaves: Changing Pattern of International Trade in East Central Africa to the Later Nineteenth Century. University of California Press 1975: S. 94–97, 126–129. google booksISBN 978-0-520-02689-6
Hilary C. Palmer, Malyn D.D. Newitt: Northern Mozambique in the Nineteenth Century: The Travels and Explorations of H.E. O’Neill. BRILL Academic 2016: S. 5–6, 61–66, 72–75, 123–124. google booksISBN 978-90-04-29368-7
Pieter Esterhuysen: Africa A to Z: Continental and Country Profiles. Third Edition. Africa Institute of South Africa 2013: S. 247. google booksISBN 978-0-7983-0344-6
Gwyn Campbell: David Griffiths and the Missionary “History of Madagascar”. BRILL Academic 2012: S. 63–67. google booksISBN 978-90-04-19518-9
Sandra Evers: Constructing History, Culture and Inequality: The Betsileo in the Extreme Southern Highlands of Madagascar. BRILL Academic 2002: S. 59, 53–54, 85–90. google booksISBN 90-04-12460-8
Karen Middleton: Ancestors, Power, and History in Madagascar. BRILL Academic 1999: S. 275–277. google booksISBN 90-04-11289-8
