Annual Conference of the Grassland Society of New South Wales Orange, N.S.W., Australia, Grassland Society of New South Wales, & Michalk, D. (1991). Perennials: The key to pasture stability : proceedings of the Sixth Annual Conference of the Grassland Society of New South Wales. The Grassland Society of New South Wales Inc..
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Annual Conference of the Grassland Society of New South Wales Orange, N.S.W., Australia, Grassland Society of New South Wales, và David Michalk. Perennials: The Key to Pasture Stability : Proceedings of the Sixth Annual Conference of the Grassland Society of New South Wales. Orange, N.S.W.: The Grassland Society of New South Wales Inc., 1991.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Annual Conference of the Grassland Society of New South Wales Orange, N.S.W., Australia, et al. Perennials: The Key to Pasture Stability : Proceedings of the Sixth Annual Conference of the Grassland Society of New South Wales. The Grassland Society of New South Wales Inc., 1991.