Παραπομπή σε μορφή APA (7η εκδ.)

Grayson, L. (1990). Green Belt, Green Fields and the Urban Fringe: Pressure on Land in the 1980's - A Guide to Sources. British Library, Science Reference & Info. Service.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Grayson, Lesley. Green Belt, Green Fields and the Urban Fringe: Pressure on Land in the 1980's - A Guide to Sources. British Library, Science Reference & Info. Service, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Grayson, Lesley. Green Belt, Green Fields and the Urban Fringe: Pressure on Land in the 1980's - A Guide to Sources. British Library, Science Reference & Info. Service, 1990.