APA
Valenzuela J. S., . (1991). Labor movements and political systems: a conceptual and typological analysis. Notre Dame: Kellogg Institute.
Chicago
Valenzuela J Samuel, . 1991. Labor movements and political systems: a conceptual and typological analysis. Notre Dame: Kellogg Institute.
Harvard
Valenzuela J. S., . (1991). Labor movements and political systems: a conceptual and typological analysis. Notre Dame: Kellogg Institute.
MLA
Valenzuela J Samuel, . Labor movements and political systems: a conceptual and typological analysis. Notre Dame: Kellogg Institute. 1991.