APA (7 वां संस्करण) प्रशस्ति पत्र

ebrary, Inc, & Upham, P. (2003). Towards sustainable aviation. Earthscan Publications.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

ebrary, Inc, और Paul Upham. Towards Sustainable Aviation. London ; Sterling, VA: Earthscan Publications, 2003.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

ebrary, Inc, और Paul Upham. Towards Sustainable Aviation. Earthscan Publications, 2003.