Clack, F. B., & Wishik, C. S. (1968). New staff for public health.
Chicago Style aipamenaClack, F. B., and C. S. Wishik. New Staff for Public Health. 1968.
MLA aipamenaClack, F. B., and C. S. Wishik. New Staff for Public Health. 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.