Citação norma APA

O'Neil, J. (1991). Visits by Soviet physicians indication of closer ties between Canadian, Siberian MDs.

Citação norma Chicago

O'Neil, John. Visits By Soviet Physicians Indication of Closer Ties between Canadian, Siberian MDs. 1991.

Citação norma MLA

O'Neil, John. Visits By Soviet Physicians Indication of Closer Ties between Canadian, Siberian MDs. 1991.

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