Does anyone have any good sources on wallabies?

I'm working on a project where I am researching the Bennett's wallaby, but I am having really bad luck with finding good sources that have the information I need (i.e. A wallaby's method of reproduction, morphological, physiological, and behavioural traits in capturing, ingesting/digesting foods, and excreting wastes, as well as such traits in inbreeding/out-breeding etc,) Any good books or websites or encyclopedias would be greatly appreciated!