Barbour, I. G. Nature, human nature, and god. Fortress press.
Cita Chicago (17th ed.)Barbour, Ian G. Nature, Human Nature, and God. Minnepolis: Fortress press.
Cita MLA (9th ed.)Barbour, Ian G. Nature, Human Nature, and God. Fortress press.
Atenció: Aquestes cites poden no estar 100% correctes.