Fitzgerald, Walter, author
Methuen, 1952
Buku Teks
Boodish, H.M., author
McGraw-Hill, 1949
Buku Teks
Gregor, Howard F., author
Van Nostrand Reinhold, 1963
Buku Teks
De Blij, Harm J., author
John Wiley & Sons, 1994
Buku Teks
De Blij, Harm J., author
John Wiley & Sons, 1997
Buku Teks