APA (7th ed.) Citation

Wright, D. F. (1990). Essential mathematics a worktect. D.C. Heath and Co.

Chicago Style (17th ed.) Citation

Wright, D. Franklin. Essential Mathematics a Worktect. D.C. Heath and Co, 1990.

MLA (8th ed.) Citation

Wright, D. Franklin. Essential Mathematics a Worktect. D.C. Heath and Co, 1990.

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