Kreuzer, James R., author
Holt, Rinehart and Winston, 1966
Buku Teks
Kreuzer, James R., author
Rineharta and Winston, 1960
Buku Teks
Kreuzer, James R., author
Holt, Rinehart and Winston, 1964
Buku Teks
Oxford University Press , 1976
Koleksi Publik
Henshaw, Marjorie, author
Little, Brown, 1962
Buku Teks