APA (7th ed.) Citation

Martina, G. (1990). Pio IX (1867 - 1878).

Chicago Style (17th ed.) Citation

Martina, Giacomo. Pio IX (1867 - 1878). 1990.

MLA (8th ed.) Citation

Martina, Giacomo. Pio IX (1867 - 1878). 1990.

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