Dow, A. (2009). Pegasus, the heart of the Harrier: The history and development of the world's first operational vertical take-off and landing jet engine. Pen & Sword Aviation.
Chicago Style (17th ed.) CitationDow, Andrew. Pegasus, the Heart of the Harrier: The History and Development of the World's First Operational Vertical Take-off and Landing Jet Engine. Barnsley, South Yorkshire: Pen & Sword Aviation, 2009.
MLA (8th ed.) CitationDow, Andrew. Pegasus, the Heart of the Harrier: The History and Development of the World's First Operational Vertical Take-off and Landing Jet Engine. Pen & Sword Aviation, 2009.
Warning: These citations may not always be 100% accurate.