APA (7th ed.) Citation

Document Image Processing 91 (Conference) (London, England). (1991). Document Image Processing 91 : proceedings of the conference held in London, April 1991: Proceedings of the conference held in London, April 1991. Blenheim Online.

Chicago Style (17th ed.) Citation

Document Image Processing 91 (Conference) (London, England). Document Image Processing 91 : Proceedings of the Conference Held in London, April 1991: Proceedings of the Conference Held in London, April 1991. Pinner: Blenheim Online, 1991.

MLA (9th ed.) Citation

Document Image Processing 91 (Conference) (London, England). Document Image Processing 91 : Proceedings of the Conference Held in London, April 1991: Proceedings of the Conference Held in London, April 1991. Blenheim Online, 1991.

Warning: These citations may not always be 100% accurate.