Cita APA (7th ed.)
Gibson, P., Papathanassis, A., & Milde, P. (2011). Cruise Sector Challenges: Making Progress in an Uncertain World. Gabler Verlag. https://doi.org/10.1007/978-3-8349-6871-5
Cita Chicago (17th ed.)
Gibson, Philip, Alexis Papathanassis, i Petra Milde. Cruise Sector Challenges: Making Progress in an Uncertain World. Wiesbaden: Gabler Verlag, 2011. https://doi.org/10.1007/978-3-8349-6871-5.
Cita MLA (9th ed.)
Gibson, Philip, et al. Cruise Sector Challenges: Making Progress in an Uncertain World. Gabler Verlag, 2011. https://doi.org/10.1007/978-3-8349-6871-5.
Atenció: Aquestes cites poden no estar 100% correctes.