References
- Barton , R. 1954 . Massey Agricultural College Sheep-faming Annual , 1954 : 19 – 19 .
- Crawford , R. 1949 . Proc. 9th Ann. Conf. N.Z. Soc. anim. Prod. , : 141 – 141 .
- McFarlane , D. 1955 . Massey Agricultural College Sheepfarming Annual , 1955 : 66 – 66 .