Ryan, J. E. (2017). Wait, What? and Life's other essential questions. Harper Collins.
Citazione stile Chigago Style (17a edizione)Ryan, James E. Wait, What? and Life's Other Essential Questions. New York: Harper Collins, 2017.
Citatione MLA (9a ed.)Ryan, James E. Wait, What? and Life's Other Essential Questions. Harper Collins, 2017.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.