APA (7th ed.) Citation

Burrill, C. W., & Knudsen, J. R. (1969). Real variables. Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Burrill, Claude W., and John R. Knudsen. Real Variables. New York: Holt, Rinehart and Winston, 1969.

MLA (8th ed.) Citation

Burrill, Claude W., and John R. Knudsen. Real Variables. Holt, Rinehart and Winston, 1969.