APA Style

REPORT of a working group on sunflower (fourth meeting) held at Facolta di Agraria, Universita degli Studi di Pisa, Pisa, Italy, 11-12 May 1991. (1992). : IBPGR.

MLA Style

REPORT of a working group on sunflower (fourth meeting) held at Facolta di Agraria, Universita degli Studi di Pisa, Pisa, Italy, 11-12 May 1991. . : IBPGR, 1992. Electronic resources.