Penn, C. W., & Clay, J. C. (1982). Comparison of the morphology, antigenicity, and pathology of Nichols and Birmingham isolates of Treponema pallidum.
Citação norma ChicagoPenn, C W., and J C. Clay. Comparison of the Morphology, Antigenicity, and Pathology of Nichols and Birmingham Isolates of Treponema Pallidum. 1982.
Citação norma MLAPenn, C W., and J C. Clay. Comparison of the Morphology, Antigenicity, and Pathology of Nichols and Birmingham Isolates of Treponema Pallidum. 1982.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.