Pierhal, J. (1975). Albert Schweitzer (1 ed.). Noguer.
Tohutoru Kātū Chicago (17th ed.)Pierhal, Jean. Albert Schweitzer. 1 ed. Buenos Aires: Noguer, 1975.
Tohutoro MLA (9th ed.)Pierhal, Jean. Albert Schweitzer. 1 ed. Noguer, 1975.
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