Stumpf, Samuel Enoch, 1918-1998, author
McGraw-Hill, 2012
Buku Teks
enry Holt and company, 1954
Buku Teks
Abel, Donald C, 1952-, author
McGraw - Hill , 2012
Buku Teks
Ji, Chang, author
Southeast University Press, 2017
eBooks
Gyula Klima, Fritz Allhoff, Anand Vaidya
BlackWell Publishing, 2007
Buku Teks