APA (7th ed.) Citation

Wilkinson, J. W., & Nash, B. J. (1989). Biology today. Macmillan.

Chicago Style (17th ed.) Citation

Wilkinson, John Wesley, and Barry John Nash. Biology Today. South Melbourne: Macmillan, 1989.

MLA (9th ed.) Citation

Wilkinson, John Wesley, and Barry John Nash. Biology Today. Macmillan, 1989.

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