APA
Keystone International Dialogue Series on Plant Genetic Resources, . (1991). Oslo plenary session (3er). Keystone, Colorado: Keystone Center.
Chicago
Keystone International Dialogue Series on Plant Genetic Resources, . 1991. Oslo plenary session (3er). Keystone, Colorado: Keystone Center.
Harvard
Keystone International Dialogue Series on Plant Genetic Resources, . (1991). Oslo plenary session (3er). Keystone, Colorado: Keystone Center.
MLA
Keystone International Dialogue Series on Plant Genetic Resources, . Oslo plenary session (3er). Keystone, Colorado: Keystone Center. 1991.