Cita APA

Subrahmanyan, T. P., & Labzoffsky, N. A. (1973). Letter: Immunity to poliomyelitis.

Chicago Style Citation

Subrahmanyan, T. P., i N. A. Labzoffsky. Letter: Immunity to Poliomyelitis. 1973.

Cita MLA

Subrahmanyan, T. P., i N. A. Labzoffsky. Letter: Immunity to Poliomyelitis. 1973.