APA Edition Citation

Blethyn, S. G., & Parker, C. Y. (1990). Designing information systems. Butterworth-Heinemann.

Chicago Edition Citation

Blethyn, Stanley G., and Carys Y. Parker. Designing Information Systems. London: Butterworth-Heinemann, 1990.

MLA Edition Citation

Blethyn, Stanley G., and Carys Y. Parker. Designing Information Systems. Butterworth-Heinemann, 1990.

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