Goodfellow, Michael, editor
[, Springer], 2012
eBooks
Muir, Robert
Henry Frowde, Hodder & Stoughton, 1921
Buku Teks
Salle, A.J.
McGraw-Hill, 1973
Buku Teks
Thompson, A.
Pustaka Ilmu, 1965
Buku Teks
Browning, Carl H.
Oxford University Press, 1937
Buku Referensi