Yes, even if you only use one paragraph or a single quote from a book, you still need to cite the entire book in the reference list. This is because citing a source provides important information to readers about the work you are referencing, including the author, title, publisher, and publication date. These details enable readers to identify and access the original source themselves if they wish to further explore the information you have presented.
Proper citation practices ensure academic integrity and give credit to the original authors whose work you are referencing. By citing the entire book, you are acknowledging the source of your information and allowing readers to easily find the original material if they want more context or details.