Gaya APA
Welfare, U, S, D, O, H, E, A. (1967).
Vital statistics of the United Stated 1965, Volume II, part A : Mortality .
Washington:
Department Of Health, Education and Welfare .
Gaya MLA
Welfare, UNITED, States,, Departement, Of, Health,, Education, And.
"Vital statistics of the United Stated 1965, Volume II, part A : Mortality".
Washington:
Department Of Health, Education and Welfare ,
1967.
Buku.