Gershenson, Harry, author
Society of Actuaries, 1961
Buku Teks
United Nations
1986
Buku Teks
Cochrane, Susan H., author
World Bank, 1983
Buku Teks
Hansluwka, Harald, author
[Publisher not identified], 1986
Buku Teks
Eka Ginanjar, author
University of Indonesia. Faculty of Medicine, 2019
Artikel Jurnal