Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Metaphysics (Aristotle):

"

It is possible that Aristotle did not write the books in the order in which they have come down to us; their arrangement is due to later editors, and there is little reason to think that it reflects how Aristotle himself would have arranged them. Based on a careful study of the content of the books and of the cross-references within them, W. D. Ross concluded that books A, B, Γ, E, Z, H, Θ, M, N, and I "form a more or less continuous work", while the remaining books α, Δ, Κ and Λ were inserted into their present locations by later editors. However, Ross cautions that books A, B, Γ, E, Z, H, Θ, M, N, and I — with or without the insertion of the others — do not constitute "a complete work".[4]