Green, John Richard
New York The Co-operative Publication Society [t.th.]
Buku Teks
edited by Fiona Roberts, Elaine MacDuff
Elsevier, 2018
Buku Teks
Stark, Freya
Harcourt Brace Jovanovich, 1961
Buku Teks
Artikel Jurnal
Shaw, Bernard, 1856-1950, author
Penguin Books , 1951
Buku Teks