Cita APA (7a ed.)
Olsen, W. S. (2008). Hard air: Adventures from the edge of flying. University of Nebraska Press.
Cita Chicago Style (17a ed.)
Olsen, W. Scott. Hard Air: Adventures from the Edge of Flying. Lincoln: University of Nebraska Press, 2008.
Cita MLA (9a ed.)
Olsen, W. Scott. Hard Air: Adventures from the Edge of Flying. University of Nebraska Press, 2008.
Precaución: Estas citas no son 100% exactas.