Pierson, Frank C.
McGraw-Hill, 1959
Buku Teks SO
Marland, Sidney P.
McGraw-Hill, 1974
Buku Teks
Regan, William B.
Harper & Row, 1970
Buku Teks SO
Bestor, Arthur
Alfred A. Knopf, 1956
Buku Teks
Grambs, Jean D.
Holt, Rinehart and Winston, 1964
Buku Teks