Citação norma APA

Kiefer, D., & Halbert, S. P. (1976). Two previously undescribed extracellular streptococcal antigens detectable with naturally occurring human antibodies.

Citação norma Chicago

Kiefer, D., and S P. Halbert. Two Previously Undescribed Extracellular Streptococcal Antigens Detectable With Naturally Occurring Human Antibodies. 1976.

Citação norma MLA

Kiefer, D., and S P. Halbert. Two Previously Undescribed Extracellular Streptococcal Antigens Detectable With Naturally Occurring Human Antibodies. 1976.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.