APA

Pritchard P., . (1981). Manual of primary health care : its nature and organization. New York: Oxford University Press.

Chicago

Pritchard Peter, . 1981. Manual of primary health care : its nature and organization. New York: Oxford University Press.

Harvard

Pritchard P., . (1981). Manual of primary health care : its nature and organization. New York: Oxford University Press.

MLA

Pritchard Peter, . Manual of primary health care : its nature and organization. New York: Oxford University Press. 1981.