APA (7th ed.) Citation

Brooke, Z. N. (1939). Lay investiture and its relation to the conflict of empire and Papacy. Humphrey Milford.

Chicago Style (17th ed.) Citation

Brooke, Z. N. Lay Investiture and Its Relation to the Conflict of Empire and Papacy. London: Humphrey Milford, 1939.

MLA (9th ed.) Citation

Brooke, Z. N. Lay Investiture and Its Relation to the Conflict of Empire and Papacy. Humphrey Milford, 1939.

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