APA (7th ed.) Citation

Spuler, B. (1977). Rulers and governments of the world. Bowker.

Chicago Style (17th ed.) Citation

Spuler, Bertold. Rulers and Governments of the World. Bowker, 1977.

MLA (9th ed.) Citation

Spuler, Bertold. Rulers and Governments of the World. Bowker, 1977.

Warning: These citations may not always be 100% accurate.