International Grassland Congress Pennsylvania, & International Grassland Congress. (1952). Proceedings of the sixth international grassland congress. Pennsylvania: Pennsylvania State College.
Style de citation ChicagoInternational Grassland Congress Pennsylvania, et International Grassland Congress. Proceedings of the Sixth International Grassland Congress. Pennsylvania: Pennsylvania State College, 1952.
Style de citation MLAInternational Grassland Congress Pennsylvania, et International Grassland Congress. Proceedings of the Sixth International Grassland Congress. Pennsylvania: Pennsylvania State College, 1952.
Attention : ces citations peuvent ne pas être correctes à 100%.