APA (7e ed.) Bronvermelding

SMITH, C. B., & WARDHAUGH, R. (1980). Signals. Macmillan.

Chicago (17e ed.) Bronvermelding

SMITH, Carl B., en ROnald WARDHAUGH. Signals. New York: Macmillan, 1980.

MLA (9e ed.) Bronvermelding

SMITH, Carl B., en ROnald WARDHAUGH. Signals. Macmillan, 1980.