APA

Hutchinson M. T., Kelley O. J. & Litzenberger S. C. (1975). Roster of scientists : for the major food crops of the developing world. Washington: Office of Agriculture Technical Assistance Bureau Angency for International Development.

Chicago

Hutchinson Martin T, Kelley Omer J and Litzenberger Samuel C. 1975. Roster of scientists : for the major food crops of the developing world. Washington: Office of Agriculture Technical Assistance Bureau Angency for International Development.

Harvard

Hutchinson M. T., Kelley O. J. and Litzenberger S. C. (1975). Roster of scientists : for the major food crops of the developing world. Washington: Office of Agriculture Technical Assistance Bureau Angency for International Development.

MLA

Hutchinson Martin T, Kelley Omer J and Litzenberger Samuel C. Roster of scientists : for the major food crops of the developing world. Washington: Office of Agriculture Technical Assistance Bureau Angency for International Development. 1975.