Universitas Indonesia, 2008
UI - Skripsi (Membership)
Warman, John, 1918-, author
Pustaka Sinar Harapan, 1971
Buku Teks
Warman, John, 1918-, author
Pustaka Sinar Harapan, 1988
Buku Teks
Warman, John, 1918-, author
Pustaka Sinar Harapan, 2004
Buku Teks
Gibbons, Jean Dickinson, author
John Wiley & Sons, 1977
Buku Teks