Steck, F. B. (1943). A Tentative Guide to Historical Materials on the Spanish Borderlands. Philadelphia.
Chicago-viite (17. p.)Steck, Francis Borgia. A Tentative Guide to Historical Materials on the Spanish Borderlands. Philadelphia, 1943.
MLA-viite (8. p.)Steck, Francis Borgia. A Tentative Guide to Historical Materials on the Spanish Borderlands. Philadelphia, 1943.
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