Laseau, Paul
John Wiley & Sons, 2001
Buku Teks
Laseau, Paul, author
Cahners Books, 1975
Buku Teks
Hall, John Oliver, author
American Book Company, 1958
Buku Teks
Chevallier, Arnaud, author
Oxford University Press, 2016
eBooks
by Arvid R. Eide [and others]
McGraw-Hill, 2002
Buku Teks