APA (7th ed.) Citation

Steele, R. (1975). Delta modulation systems. Pentech Press Ltd..

Chicago Style (17th ed.) Citation

Steele, R. Delta Modulation Systems. London: Pentech Press Ltd., 1975.

MLA (9th ed.) Citation

Steele, R. Delta Modulation Systems. Pentech Press Ltd., 1975.

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