APA (7th ed.) Citation

Calladine, C. R., & Drew, H. R. (1997). Understanding DNA: The molecule & how it works (2nd ed.). Acad. Press.

Chicago Style (17th ed.) Citation

Calladine, C. R., and Horace R. Drew. Understanding DNA: The Molecule & How It Works. 2nd ed. San Diego, Calif [u.a.]: Acad. Press, 1997.

MLA (9th ed.) Citation

Calladine, C. R., and Horace R. Drew. Understanding DNA: The Molecule & How It Works. 2nd ed. Acad. Press, 1997.