APA (7th ed.) Citation

Simpkins, J., & Williams, J. I. (1992). Advanced biology / J. Simpkins, J.I. Williams (3rd ed.). Collins.

Chicago Style (17th ed.) Citation

Simpkins, J., and J. I. Williams. Advanced Biology / J. Simpkins, J.I. Williams. 3rd ed. London: Collins, 1992.

MLA (9th ed.) Citation

Simpkins, J., and J. I. Williams. Advanced Biology / J. Simpkins, J.I. Williams. 3rd ed. Collins, 1992.

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