u/pixieorfae

I am writing a poetry dissertation and need to reference the book 'Answering back' by Carol-Anne Duffy in its entirety as my dissertation is directly based on the book. It is an anthology of poems in which no two pages have the same author, and I have used several individual poems from the book in my dissertation that also need referencing. I'm familiar with the convention of shortening citations when a book is used multiple times, however that implies the entire book is authored by one person. What do I do when each page of the book has a different author? Any answers gratefully recieved :)