Walsh, Linda, author
John Wiley & Sons, 2017
Buku Teks
Plumb, J.H. (John Harold), 1911-, author
Penguin Books, 1963
Buku Teks
David Fairer, Christine Gerrard.
Wiley-Blackwell, 2015
Buku Teks
Richetti, John, author
John Wiley & Sons, 2017
Buku Teks
Findling, John E,
Greenwood Press, 1998
Buku Teks