Cita APA

Nurse, G. T., & Jenkins, T. (1974). Letter: Lactose intolerance in San populations.

Citación estilo Chicago

Nurse, G T., y T. Jenkins. Letter: Lactose Intolerance in San Populations. 1974.

Cita MLA

Nurse, G T., y T. Jenkins. Letter: Lactose Intolerance in San Populations. 1974.