Raznjevic, Kuzman
Hemisphere Pub. Corp., 1976
Buku Referensi
Muni, Harry W.
Prentice-Hall, 1973
Buku Teks
Spiegel, Murray R., author
McGraw-Hill, 1999
Buku Teks
Burington, Richard Stevens, author
McGraw-Hill, 1973
Buku Referensi
Spiegel, Murray R., author
McGraw-Hill , 2012
Buku Teks