Avyzius, Jonas
Progress, 1974
Buku Teks
Humphrey, Carolyn J. , author
An Aspen , 1998
Buku Teks
Becker, Norman, author
McGraw-Hill, 2011
Buku Teks
Design Media Publishing Limited, 2010
Buku Referensi
Gestwicki, Carol, author
Wadsworth and Cengage Learning, 2013
Buku Teks