Trích dẫn APA

Gray, L. C. (1977). The geographic and functional distribution of black physicians: Some research and policy considerations.

Trích dẫn kiểu Chicago

Gray, L C. The Geographic and Functional Distribution of Black Physicians: Some Research and Policy Considerations. 1977.

Trích dẫn MLA

Gray, L C. The Geographic and Functional Distribution of Black Physicians: Some Research and Policy Considerations. 1977.

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