APA (7th ed.) Citation

Treanor, P. (1969). The Vatican Observatory. Specola vaticana.

Chicago Style (17th ed.) Citation

Treanor, P.J. The Vatican Observatory. Città del Vaticano: Specola vaticana, 1969.

MLA (9th ed.) Citation

Treanor, P.J. The Vatican Observatory. Specola vaticana, 1969.

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