Phillips, D. R., & Verhasselt, Y. (1994). Health and development. s.n.
Chicago Style aipamenaPhillips, David R., and Yola Verhasselt. Health and Development. New York: s.n, 1994.
MLA aipamenaPhillips, David R., and Yola Verhasselt. Health and Development. s.n, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.