When paraphrasing or quoting a concept from page 427 of Campbell Biology , you use the author–date method.
The bibliography requires inverted authors (Last name, First name) and uses periods rather than commas. campbell biology 11th edition citation
2. Urry et al., Campbell Biology , 205.
If you are directly quoting a definition (e.g., "Evolution is descent with modification"), you must include the page number. When paraphrasing or quoting a concept from page