Payne, James L., author
Yale University Press , 1968
Buku Teks
Avramovic, Dragoslav, author
John Hopkins Press, 1972
Buku Teks
study coordinators and editors, A.R. Omran and C.C. Standley ; principal investigators, G. Ochoa
World Health Organization, 1981
Buku Teks
Simmie, James M., author
Hutchinson, 1974
Buku Teks
Gibson, William M., author
Duke University Press, 1948
Buku Teks