Graham, A., Kremarik, F., & Kruse, W. (2020). Attitudes of ageing passengers to air travel since the coronavirus pandemic. J Air Transp Manag.
استشهاد بنمط شيكاغوGraham, Anne, Frances Kremarik, و Willy Kruse. "Attitudes of Ageing Passengers to Air Travel Since the Coronavirus Pandemic." J Air Transp Manag 2020.
MLA استشهادGraham, Anne, Frances Kremarik, و Willy Kruse. "Attitudes of Ageing Passengers to Air Travel Since the Coronavirus Pandemic." J Air Transp Manag 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.