Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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