Strong, C.F.
Modern political constitutions: an introduction to the comparative study of their history and existing forms
Sidgwick & Jackson Limited, 1960
 Buku Teks SO
Strong, C.F.
Konstitusi-Konstitusi politik Modern: Kajian Tentang Sejarah dan Bentuk-bentuk Konstitusi Dunia: An introduction to the comparative study of their history and existing form
Nuansa, 2004
 Buku Teks
Introduction to political science
by Carlton Clymer Rodee ... [et al.]
McGraw-Hill Kogakusha, 1976
 Buku Teks SO
Roucek, Joseph S.
Introduction to political science
Thomas Y. Crowell, 1950
 Buku Teks
Introduction to political science
by Carlton Clymer Rodee ... [et al.]
McGraw-Hill, 1983
 Buku Teks SO