Cita APA

Cummings, C. G., & Ross, P. W. (1981). Carriage of group B streptococci in the upper respiratory tract.

Citación estilo Chicago

Cummings, C G., y P W. Ross. Carriage of Group B Streptococci in the Upper Respiratory Tract. 1981.

Cita MLA

Cummings, C G., y P W. Ross. Carriage of Group B Streptococci in the Upper Respiratory Tract. 1981.