APA (7th ed.) Citation

Day, A. J., & Degenhardt, H. W. (1984). Political parties of the world. Gale Research.

Chicago Style (17th ed.) Citation

Day, Alan J., and Henry W. Degenhardt. Political Parties of the World. Detroit: Gale Research, 1984.

MLA (9th ed.) Citation

Day, Alan J., and Henry W. Degenhardt. Political Parties of the World. Gale Research, 1984.