APA (7 वां संस्करण) प्रशस्ति पत्र

Guardini, R. Aesthetic-theological thoughts on "The Windhover": Romano Guardini. Hopkins : a collection of critical essays.(1966).

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Guardini, Romano. "Aesthetic-theological Thoughts on "The Windhover": Romano Guardini." Hopkins : A Collection of Critical Essays.(1966) .

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Guardini, Romano. "Aesthetic-theological Thoughts on "The Windhover": Romano Guardini." Hopkins : A Collection of Critical Essays.(1966), .