APA

Nickel J. L., . (1989). Research managament for devolpment : open letter to new agricultural research director. San José: Instituto Interamericano de Ciencias Agrícolas.

Chicago

Nickel John L, . 1989. Research managament for devolpment : open letter to new agricultural research director. San José: Instituto Interamericano de Ciencias Agrícolas.

Harvard

Nickel J. L., . (1989). Research managament for devolpment : open letter to new agricultural research director. San José: Instituto Interamericano de Ciencias Agrícolas.

MLA

Nickel John L, . Research managament for devolpment : open letter to new agricultural research director. San José: Instituto Interamericano de Ciencias Agrícolas. 1989.