Cambridge University Press, 1978
eBooks
Cambridge University Press, 1987
eBooks
Castle, Gregory, author
Blackwell, 2007
Buku Teks
Ryan, Michael, 1951-, author
Wiley-Blackwell, 2017
Buku Teks SO
edited by Julie Rivkin and Michael Ryan
John Wiley & Sons, 2017
Buku Teks SO