Engwicht, David

New Society Publihers, 1999

 Buku Teks

Paul, Raymond, author

W.W. Norton & Company, 1987

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Achmad Syarif, author

Universitas Indonesia, 2014

 UI - Skripsi (Membership)

Ridwan Amiruddin, author

[Faculty of Public Health UNHAS;Universitas Hasanuddin. Faculty of Public Health;Universitas Hasanuddin. Faculty of Public Health;Universitas Hasanuddin. Faculty of Public Health;Universitas Hasanuddin. Faculty of Public Health;Universitas Hasanuddin. Faculty of Public Health;Universitas Hasanuddin. Faculty of Public Health, Universitas Hasanuddin. Faculty of Public Health], 2015

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Colgan, Jenny, author

William Morrow, an imprint of HarperCollinsPublishers, 2016

 Buku Teks