APA-Zitierstil (7. Ausg.)
Azeiteiro, U., Leal Filho, W., & Caeiro, S. (2014). E-learning and education for sustainability. PL Academic Research.
Chicago-Zitierstil (17. Ausg.)
Azeiteiro, Ulisses, Walter Leal Filho, und Sandra Caeiro. E-learning and Education for Sustainability. Frankfurt am Main, [Germany]: PL Academic Research, 2014.
MLA-Zitierstil (9. Ausg.)
Azeiteiro, Ulisses, et al. E-learning and Education for Sustainability. PL Academic Research, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.