edited by Louis G. Locke, William M. Gibson, George W. Arms
Holt, Rinehart and Winston, 1959
Buku Teks SO
edited by L.G. Locke, W.M. Gibson and G.W. Arms
Holt, Rinehart and Winston, 1957
Koleksi Publik
Hunt, Peter, 1945-
Oxford University Press, 1994
Buku Teks SO
New, Christopher
Routledge, 1999
Buku Teks SO
Baldwin, Robert C.
Ronald Press, 1950
Buku Teks SO