Page, G. Terry
New York Kogan Page 1977
Buku Referensi
Page, G. Terry
New York, Kogan Page, 1977
Buku Referensi
edited by Harold Benjamin
McGraw-Hill, 1959
Buku Referensi
Fox, James R.
Oceana Publication, 1992
Buku Referensi
Presner, Lewis A.
John Wiley & Sons, 1991
Buku Referensi