Helal, A. H., & Weiss, J. W. (1989). The Impact of CD-ROM on Library Operations and Universal Availability of Information: Festschrift in Honour of Maurice B. Line. International Essen Symposium (11th, Essen, Germany, September 26-29, 1988). Publications of Essen University Library 11.
Cita Chicago Style (17a ed.)Helal, Ahmed H., y Joachim W. Weiss. The Impact of CD-ROM on Library Operations and Universal Availability of Information: Festschrift in Honour of Maurice B. Line. International Essen Symposium (11th, Essen, Germany, September 26-29, 1988). Publications of Essen University Library 11. 1989.
Cita MLA (9a ed.)Helal, Ahmed H., y Joachim W. Weiss. The Impact of CD-ROM on Library Operations and Universal Availability of Information: Festschrift in Honour of Maurice B. Line. International Essen Symposium (11th, Essen, Germany, September 26-29, 1988). Publications of Essen University Library 11. 1989.