APA aipamena

Purdom, P. W. (1972). The shape of a national health program.

Chicago Style aipamena

Purdom, P W. The Shape of a National Health Program. 1972.

MLA aipamena

Purdom, P W. The Shape of a National Health Program. 1972.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.