Johnson, Robert W., author
Allyn and Bacon, 1962
Buku Teks
Gitman, Lawrence J., author
Pearson Education, 2012
Buku Teks
Rees, Bill
Prentice-Hall, 1990
Buku Teks
Shona Kamila Laily, author
2017
UI - Skripsi (Membership)
Joedith Monica, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2017
UI - Skripsi (Membership)