APA استشهاد

INSDOC. (1977). An Introduction to computer based library systems. Heyden.

استشهاد بنمط شيكاغو

INSDOC. An Introduction to Computer Based Library Systems. London: Heyden, 1977.

MLA استشهاد

INSDOC. An Introduction to Computer Based Library Systems. Heyden, 1977.