Shearwan, R.L.
London: Longman, 1969
Buku Teks
Jesus Ballesteros, Encarnacion Fernandez Ruiz-Galvez, Pedro Talavera, editors
Springer, 2012
Buku Teks
Jesss Ballesteros
Springer, 2012
eBooks
Kinyon, Stanley V.
West Publishing Company, 1971
Buku Teks
Jamrozik, Adam, author
Cambridge University Press, 2000
Buku Teks