Παραπομπή σε μορφή APA (7η εκδ.)

Balula, A., & Moreira, A. (2014). Evaluation of Online Higher Education: Learning, Interaction and Technology. Springer International Publishing : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Balula, Ana, και António Moreira. Evaluation of Online Higher Education: Learning, Interaction and Technology. Cham: Springer International Publishing : Imprint: Springer, 2014.

Παραπομπή σε μορφή MLA (8th εκδ.)

Balula, Ana, και António Moreira. Evaluation of Online Higher Education: Learning, Interaction and Technology. Springer International Publishing : Imprint: Springer, 2014.