Παραπομπή σε μορφή APA (7η εκδ.)

Campbell, K. O. (1958). An economic study of pasture improvement on some farms in New South Wales. University of Sydney, Dept. of Agricultural Economics.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Campbell, Keith O. An Economic Study of Pasture Improvement on Some Farms in New South Wales. Sydney: University of Sydney, Dept. of Agricultural Economics, 1958.

Παραπομπή σε μορφή MLA (8th εκδ.)

Campbell, Keith O. An Economic Study of Pasture Improvement on Some Farms in New South Wales. University of Sydney, Dept. of Agricultural Economics, 1958.