Tohutoro APA (7th ed.)
Madariaga, S. d. (1967). Christopher Columbus (1a. ed.). The Macmillan Company.
Tohutoru Kātū Chicago (17th ed.)
Madariaga, Salvador de. Christopher Columbus. 1a. ed. The Macmillan Company, 1967.
Tohutoro MLA (9th ed.)
Madariaga, Salvador de. Christopher Columbus. 1a. ed. The Macmillan Company, 1967.
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