Gough, K. John
Addison-Wesley, 1988
Buku Teks
Koeneman, Olaf, author
Cambridge University Press, 2017
Buku Teks
Thomas, Linda
Blackwell, 1995
Buku Teks
Carnie, Andrew, 1969-, author
Cambridge University Press, 2011
eBooks
Fortuin, Egbert, author
Cambridge University Press, 2019
Buku Teks