APA (7th ed.) Citation

Lees, N., & Woolston, H. (1992). Environmental information: A guide to sources. British Library.

Chicago Style (17th ed.) Citation

Lees, Nigel, and Helen Woolston. Environmental Information: A Guide to Sources. London [u.a.]: British Library, 1992.

MLA (9th ed.) Citation

Lees, Nigel, and Helen Woolston. Environmental Information: A Guide to Sources. British Library, 1992.