APA (7th ed.) Citation

British Library. Science Reference and Information Service & Van Dulken, S. (1990). Introduction to patents information. Patents Information, Science Reference and Information Services.

Chicago Style (17th ed.) Citation

British Library. Science Reference and Information Service and Stephen Van Dulken. Introduction to Patents Information. London: Patents Information, Science Reference and Information Services, 1990.

MLA (8th ed.) Citation

British Library. Science Reference and Information Service and Stephen Van Dulken. Introduction to Patents Information. Patents Information, Science Reference and Information Services, 1990.