APA (7th ed.) Citation

Pio X, P. (1954). San Pio X: : cartas (1o ed.). Juan Flors.

Chicago Style (17th ed.) Citation

Pio X, Papa. San Pio X: : Cartas. 1o ed. Barcelona ; Madrid ; Valencia: Juan Flors, 1954.

MLA (9th ed.) Citation

Pio X, Papa. San Pio X: : Cartas. 1o ed. Juan Flors, 1954.

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