Gaya APA

Prytherch, R. et al (1991). Walford's guide to reference material volume 3 : generalia,language and leterature, the arts (5th Ed.). London: The Library Association.

Gaya MLA

Prytherch, Ray. et al. "Walford's guide to reference material volume 3 : generalia,language and leterature, the arts". 5th Ed. London: The Library Association, 1991. Text.