Kaplan, Irving, author
Addison-Wesley, 1964
Buku Teks
Boelaert, Nele, author
Springer, 2012
eBooks
Halliday, David, 1916-2010, author
John Wiley & Sons, 1960
Buku Teks
Livesey, Derek L., author
Blaisdell , 1966
Buku Teks
Burcham, W.E.
Longman , 1978
Buku Teks