Sinaga, Indra
Pustaka Sinar Harapan, 1992
Buku Teks
Civitello, Andrew M., author
McGraw-Hill, 2008
Buku Teks
Tichelmann, Karsten, author
Birkhauser GmbH, 2008
Buku Referensi
edited by Ilka Ruby, Andreas Ruby
Ruby Press, 2010
Buku Teks
Gerwick, Ben C
CRC Pres, 2007
Buku Teks