Simpson, George Eaton, 1904-, author
Harper & Brothers, 1958
Buku Teks
Diller, Jerry V., author
Thomson Brooks/Cole, 2007
Buku Teks
Schaefer, Richard T, author
Pearson Education, 2015
Buku Teks
Rose, Peter I., foreword
Random House, 1964
Buku Teks
Rose, Arnold M., author
UNESCO, 1951
Buku Teks