APA (7e ed.) Bronvermelding

Schools Council, Nuffield Foundation, Scottish Education Department. (1973). Trees ; Stages 1 & 2: A unit for teachers. Macdonald Educational.

Chicago (17e ed.) Bronvermelding

Schools Council, Nuffield Foundation, Scottish Education Department. Trees ; Stages 1 & 2: A Unit for Teachers. London: Macdonald Educational, 1973.

MLA (9e ed.) Bronvermelding

Schools Council, Nuffield Foundation, Scottish Education Department. Trees ; Stages 1 & 2: A Unit for Teachers. Macdonald Educational, 1973.