Bettetini, Gianfranco, author
Mouton, 1973
Buku Teks
edited by Jill Nelmes
Routledge, 1996
Buku Teks
Brigitta Jessie Amelia, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2022
UI - Tugas Akhir
edited by Gerald Mast and Marshall Cohen
Oxford University Press, 1979
Buku Teks
LIPI, 1974
Buku Teks