APA

Caldwell J. C., Caldwell P., .The nature and limits of the sub-saharan african AIDS epidemic : Evidence from geographic and other patterns. : .

Chicago

Caldwell John C, Caldwell Pablo, .The nature and limits of the sub-saharan african AIDS epidemic : Evidence from geographic and other patterns. : .

Harvard

Caldwell J. C., Caldwell P., .The nature and limits of the sub-saharan african AIDS epidemic : Evidence from geographic and other patterns. : .

MLA

Caldwell John C, Caldwell Pablo, .: . .