Παραπομπή σε μορφή APA (7η εκδ.)

Schools Council, Nuffield Foundation, Nuffield Foundation, & Scottish Education Department. (1973). Holes, gaps and cavities ; stages 1 & 2: A unit for teachers. MacDonald Educational.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Schools Council, Nuffield Foundation, Nuffield Foundation, και Scottish Education Department. Holes, Gaps and Cavities ; Stages 1 & 2: A Unit for Teachers. London: MacDonald Educational, 1973.

Παραπομπή σε μορφή MLA (9th εκδ.)

Schools Council, Nuffield Foundation, et al. Holes, Gaps and Cavities ; Stages 1 & 2: A Unit for Teachers. MacDonald Educational, 1973.