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KANJANAPHITSARN Supre. (2013). An analytical study of euthanasia in Buddhism: A case study of Buddhadāsa Bhikkhu’s death. PhD. Assumption University of Thailand.

RALPH Jeff. (2008). The path to selfless restoration: Interconnectedness between Bhikkhu Buddhadasa and ecological restoration. MA. University of Victoria.

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JACOBS Michael Collins Jr. (1974). Bhikku Buddhadasa: A Thai Buddhist and the psycho-social dialectic of cultural evolution and transformation through religious reformation. MA. The American University.

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PUNTARIGVIVAT Tavivat. (1994). Bhikkhu Buddhadasa’s Dhammic socialism in dialogue with Latin America liberation theology. PhD. Temple University.

Consultable at the EFEO Chiang Mai Library: https://koha.bulac.fr/cgi-bin/koha/opac-detail.pl?biblionumber=870783

PAYULPITACK Suchira. (1991). Buddhadasa’s movement: An analysis of its origins, development, and social impact. PhD. Bielefeld University.

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PONGUDOM Maen. (1979). Apologetic and missionary proclamation: exemplified by American Presbyterian missionaries to Thailand (1828-1978), early church apologists: Justin Martyr, Clement of Alexandria and Origen, and the Venerable Buddhadasa Bhikkhu, a Thai Buddhist monk-apologist. PhD. University of Utago.

Consultable at the EFEO Chiang Mai Library: https://koha.bulac.fr/cgi-bin/koha/opac-detail.pl?biblionumber=937649

PHONGPHIT Michael Seri. (1978). The problem of religious language: A study of Buddhadasa Bhikkhu and Ian Ramsey as models for a mutual understanding of Buddhism and Christianity. PhD. Hochschule für Philosophie, München.

Consultable at the EFEO Chiang Mai Library: https://koha.bulac.fr/cgi-bin/koha/opac-detail.pl?biblionumber=937291