APA (7th ed.) Citation

Bellarmino, R. F. R. (1619). De officio principis Christiani libri tres. Ex typographia Bartholomæi Zannetti.

Chicago Style (17th ed.) Citation

Bellarmino, Roberto Francesco Romolo. De Officio Principis Christiani Libri Tres. Romæ: Ex typographia Bartholomæi Zannetti, 1619.

MLA (8th ed.) Citation

Bellarmino, Roberto Francesco Romolo. De Officio Principis Christiani Libri Tres. Ex typographia Bartholomæi Zannetti, 1619.

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