Pesek, Boris P., author
Harvester. Wheatshaf, 1988
Buku Teks
Luckett, Dudley G., author
McGraw-Hill , 1984
Buku Teks
Stanford, Jon D., author
John Wiley & Sons, 1973
Buku Teks
Barger, Harold, author
Rand McNally, 1969
Buku Teks
Mishkin, Frederick S., author
Pearson Education, 2013
Buku Teks