Watkins, L. H.
Prentice-Hall, 1981
Buku Teks
Lowe, Julian
Philip Allan, 1980
Buku Teks
HMSO, 1987
Buku Teks
Putu Tommy Yudha Sumatera Suyasa, author
Universitas Indonesia, 2015
UI - Disertasi (Membership)
Anni Fitriana, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2022
UI - Tesis (Membership)