Lord, Mary, author
Oxford University, 1974
Buku Teks
Porter, Hal
University of Queensland Press, 1987
Buku Teks
Porter, Hal
Thomas Nelson and Sons, 1974
Koleksi Publik
Porter, Hal
Angus and Robertson, 1962
Buku Teks
Steele, Peter, author
Oxford University , 1992
Buku Teks