Khanna, J., Van Look,P. F. A., & Griffin, P. D. (1994). Challenges in reproductive health research ; biennial report 1992-1993. World Health Organization.
Chicago-viite (17. p.)Khanna, J., Van Look,P. F. A, ja P. D. Griffin. Challenges in Reproductive Health Research ; Biennial Report 1992-1993. Geneva: World Health Organization, 1994.
MLA-viite (9. p.)Khanna, J., et al. Challenges in Reproductive Health Research ; Biennial Report 1992-1993. World Health Organization, 1994.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.