Label based in text citation
I can't recall ever seeing such a format being used, particularly in the context of books (as opposed to papers). Part of this is, I think, a desire to be clear. For instance, what does [WVDE13:2] mean? Does it refer to the second chapter, or to page 2? Or does it refer to a specific work? Without the clarification of "p.", it's relatively ambiguous from a first glance. As a reader of a book, that can get very annoying over extended periods of time. 

Given that, you are free to use any style that your publisher allows; if it's something relatively unorthodox, then you should explain that somewhere (perhaps a comment prefacing the bibliography would suffice).