APA (7th ed.) Citation

(2021). Biology: An illustrated guide for all ages / Dr. Helen Pilcher.

Chicago Style (17th ed.) Citation

Biology: An Illustrated Guide for All Ages / Dr. Helen Pilcher. 2021.

MLA (9th ed.) Citation

Biology: An Illustrated Guide for All Ages / Dr. Helen Pilcher. 2021.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.