edited by David L. Sills
Macmillan and The Free Press, 1968
Buku Referensi
Paul Edwards, editor in chief
Macmilan , 1972
Buku Referensi
editor in chief, Paul Edwards
Macmilan , 1972
Buku Referensi
Americana Corporation, 1960
Buku Referensi
Americana Corporation, 1960
Buku Referensi