APA (7th ed.) Citation

Wardhaugh, R. (1993). Investigating language: Central problems in linguistcs. Blackwell.

Chicago Style (17th ed.) Citation

Wardhaugh, Ronald. Investigating Language: Central Problems in Linguistcs. Oxford: Blackwell, 1993.

MLA (8th ed.) Citation

Wardhaugh, Ronald. Investigating Language: Central Problems in Linguistcs. Blackwell, 1993.

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