APA

Packar D, . (1977). History of medicine in the United States. New York: Hofner Press.

Chicago

Packar D, . 1977. History of medicine in the United States. New York: Hofner Press.

Harvard

Packar D, . (1977). History of medicine in the United States. New York: Hofner Press.

MLA

Packar D, . History of medicine in the United States. New York: Hofner Press. 1977.