APA (7th ed.) Citation

Treanor, P. J. (1969). The Vatican Observatory. Specola Vaticana.

Chicago Style (17th ed.) Citation

Treanor, Patrick J. The Vatican Observatory. Città del Vaticano: Specola Vaticana, 1969.

MLA (9th ed.) Citation

Treanor, Patrick J. The Vatican Observatory. Specola Vaticana, 1969.

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