Preston, Lee E., author
IBER (Institute of Business and Economic Research), 1966
Buku Teks
Appleton-Century-Crofts, 1967
Buku Teks
Adler, Max K.
Crosby Lockwood & Sons, 1965
Buku Teks
Doman, Don
Gramedia Pustaka Utama, 1997
Buku Teks
Doman, Don
Gramedia Pustaka Utama, 1997
Buku Teks