APA (7th ed.) Citation

Campbell, M. E. (1999). Focus: Writing sentences and paragraphs. Prentice Hall.

Chicago Style (17th ed.) Citation

Campbell, Martha E. Focus: Writing Sentences and Paragraphs. Upper Saddle River, NJ: Prentice Hall, 1999.

MLA (8th ed.) Citation

Campbell, Martha E. Focus: Writing Sentences and Paragraphs. Prentice Hall, 1999.