APA (7th ed.) Citation

Gregg, S. (1999). Challenging the modern world: Karol Wojtyła, John Paul II and the development of Catholic social teaching. Lexington Books.

Chicago Style (17th ed.) Citation

Gregg, Samuel. Challenging the Modern World: Karol Wojtyła, John Paul II and the Development of Catholic Social Teaching. Lanham, Md. [u.a.]: Lexington Books, 1999.

MLA (9th ed.) Citation

Gregg, Samuel. Challenging the Modern World: Karol Wojtyła, John Paul II and the Development of Catholic Social Teaching. Lexington Books, 1999.

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