Munro, Alice
Katta, 2014
Buku Teks SO
edited by Benjamin B. Hoover, Donald S. Taylor
Holt, 1957
Buku Teks SO
Summers, Richard
Rinehart & Company, 1948
Buku Teks SO
Bendixen, Alfred
Wiley-Blackwell, 2010
Buku Teks SO
edited by Roger Sherman Loomis and Donald Lemen Clark
Holt, Rinehart and Winston, 1960
Buku Teks SO