Purinton, Carl E.
Christianity and its Judaic heritage : an introduction with selected sources / Carl E. Purinton
The Ronald Press, 1961
 Buku Teks SO
Fucilla, Joseph G.
Fucilla Spanish dictionary Spanish-English English-Spanish
Follett Publishing Company, 1964
 Buku Referensi
Collier, Leonard Dawson
Everyday Spanish
St. Paul's House Warwick Lane, 1973
 Buku Teks SO
Payne, Stanley G.
The Spanish revolution
W.W. Norton, 1970
 Buku Teks SO
Cronin, A.J.
The Spanish gardener
Bantam Books, 1957
 Buku Teks SO