Schlenker, B.R., author
John Wiley & Sons, 1969
Buku Teks
Rappaz, Michel, author
Springer-Verlag, 2003
Buku Teks
Chapman & Hall, 2018
Majalah, Jurnal, Buletin
Ashby, Mike, author
Butterworth-Heinemann, 2014
eBooks
Van Vlack, Lawrence H., author
Addison-Wesley, 1964
Buku Teks