APA (7e ed.) Bronvermelding
Azeiteiro, U., Leal Filho, W., & Caeiro, S. (2014). E-learning and education for sustainability. PL Academic Research.
Chicago (17e ed.) Bronvermelding
Azeiteiro, Ulisses, Walter Leal Filho, en Sandra Caeiro. E-learning and Education for Sustainability. Frankfurt am Main, [Germany]: PL Academic Research, 2014.
MLA (9e ed.) Bronvermelding
Azeiteiro, Ulisses, et al. E-learning and Education for Sustainability. PL Academic Research, 2014.
Let op: Deze citaties zijn niet altijd 100% accuraat.