APA Style
Practice, I, C, [, A, P, A. (1991).
Agroforestry: principles and practice: proceedings of an international conference, 23-28 July 1989... .
Edinburgh:
Elsevier.
MLA Style
Practice, INTERNATIONAL, Conference, [on], Agroforestry, Principles, And.
"Agroforestry: principles and practice: proceedings of an international conference, 23-28 July 1989...".
Edinburgh:
Elsevier,
1991.
Electronic resources.