Lechner, H. D., author
Wadsworth, 1984
Buku Teks
Davis, Gordon B., author
McGraw-Hill, 1978
Buku Teks
Brookshear, J. Glenn, author
Pearson, 2019
Buku Teks
Davis, Gordon B., author
McGraw-Hill, 1977
Buku Teks
O`Brien, James A., 1936-, author
Richard D. Iriwin, 1986
Buku Referensi