APA (7 वां संस्करण) प्रशस्ति पत्र

Olhoff, N. (1978). Optimal design against structural vibration and instability. Technical University of Denmark.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Olhoff, Niels. Optimal Design Against Structural Vibration and Instability. Lyngby [Denmark]: Technical University of Denmark, 1978.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Olhoff, Niels. Optimal Design Against Structural Vibration and Instability. Technical University of Denmark, 1978.