APA (7th ed.) Citation

Laing, L. H. (1950). Source book in European governments. Sloane.

Chicago Style (17th ed.) Citation

Laing, Lionel Hassell. Source Book in European Governments. New York: Sloane, 1950.

MLA (9th ed.) Citation

Laing, Lionel Hassell. Source Book in European Governments. Sloane, 1950.