APA (7th ed.) Citation

Passelecq, G., Suchecky, B., & Wills, G. (1997). The hidden encyclical of Pius XI. Harcourt Brace & Company.

Chicago Style (17th ed.) Citation

Passelecq, Georges, Bernard Suchecky, and Garry Wills. The Hidden Encyclical of Pius XI. New York [etc.]: Harcourt Brace & Company, 1997.

MLA (9th ed.) Citation

Passelecq, Georges, et al. The Hidden Encyclical of Pius XI. Harcourt Brace & Company, 1997.