APA

Humphreys M., . (1999). Yellow fever and the south. Baltimore: Johns Hopkins University.

Chicago

Humphreys Margaret, . 1999. Yellow fever and the south. Baltimore: Johns Hopkins University.

Harvard

Humphreys M., . (1999). Yellow fever and the south. Baltimore: Johns Hopkins University.

MLA

Humphreys Margaret, . Yellow fever and the south. Baltimore: Johns Hopkins University. 1999.