APA (7th ed.) Citation

Berry, H. M. (1975). An introduction to systemic linguistics. St. Martin's Press.

Chicago Style (17th ed.) Citation

Berry, H. Margaret. An Introduction to Systemic Linguistics. New York: St. Martin's Press, 1975.

MLA (9th ed.) Citation

Berry, H. Margaret. An Introduction to Systemic Linguistics. St. Martin's Press, 1975.