Citazione Stile APA (7a Edizione)

Azeiteiro, U., Leal Filho, W., & Caeiro, S. (2014). E-learning and education for sustainability. PL Academic Research.

Citazione stile Chigago Style (17a edizione)

Azeiteiro, Ulisses, Walter Leal Filho, e Sandra Caeiro. E-learning and Education for Sustainability. Frankfurt am Main, [Germany]: PL Academic Research, 2014.

Citatione MLA (9a ed.)

Azeiteiro, Ulisses, et al. E-learning and Education for Sustainability. PL Academic Research, 2014.