Speer, R. E. (1924). Race and race relations: A Christian view of human contacts. Fleming H. Revell Company.
Citace podle Chicago (17th ed.)Speer, Robert E. Race and Race Relations: A Christian View of Human Contacts. New York: Fleming H. Revell Company, 1924.
Citace podle MLA (8th ed.)Speer, Robert E. Race and Race Relations: A Christian View of Human Contacts. Fleming H. Revell Company, 1924.
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