edited by H.J. Butcher and Ernest Rudd
McGraw-Hill, 1972
Buku Teks
edited by Heather Eggins
Open University Press, 2003
Buku Teks
Henderson, Algo D.
Unesco Paris, 1970
Buku Referensi
John C. Smart
Springer, 2012
eBooks
Thomas Cesariano Suryo Soesanto
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2024
UI - Skripsi Membership