Proceedings annual meeting of the north central weed control conference Iowa, 1957 dic 10-12, & North Central Weed Control Conference. (1957). Proceedings annual meeting of the north central weed control conference. [editor no identificado].
Cita Chicago Style (17a ed.)Proceedings annual meeting of the north central weed control conference Iowa, 1957 dic 10-12, y North Central Weed Control Conference. Proceedings Annual Meeting of the North Central Weed Control Conference. Iowa: [editor no identificado], 1957.
Cita MLA (8a ed.)Proceedings annual meeting of the north central weed control conference Iowa, 1957 dic 10-12, y North Central Weed Control Conference. Proceedings Annual Meeting of the North Central Weed Control Conference. [editor no identificado], 1957.