Hattersley, R. T., & Yong, K. C. (1972). Hydraulic investigation of critical gradients for approaches to farm water storages. University of New South Wales, Water Research Laboratory.

Hattersley, R. T., and K. C. Yong. Hydraulic Investigation of Critical Gradients for Approaches to Farm Water Storages. Manly Vale, N.S.W.: University of New South Wales, Water Research Laboratory, 1972.

Hattersley, R. T., and K. C. Yong. Hydraulic Investigation of Critical Gradients for Approaches to Farm Water Storages. University of New South Wales, Water Research Laboratory, 1972.