APA (7e ed.) Bronvermelding

Holloway, S. (2008). Straight and level: Practical airline economics (3rd ed.). Ashgate Pub.

Chicago (17e ed.) Bronvermelding

Holloway, Stephen. Straight and Level: Practical Airline Economics. 3rd ed. Aldershot, England ; Burlington, VT: Ashgate Pub, 2008.

MLA (9e ed.) Bronvermelding

Holloway, Stephen. Straight and Level: Practical Airline Economics. 3rd ed. Ashgate Pub, 2008.