Παραπομπή σε μορφή APA (7η εκδ.)

Close, Avrille. (1992). Flexible learning for balanced science: Resources for initial teacher training and inset. H.M.S.O.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Close, Avrille. Flexible Learning for Balanced Science: Resources for Initial Teacher Training and Inset. London: H.M.S.O, 1992.

Παραπομπή σε μορφή MLA (9th εκδ.)

Close, Avrille. Flexible Learning for Balanced Science: Resources for Initial Teacher Training and Inset. H.M.S.O, 1992.