Michelbacher, A., Bacon, O., & Wade, W. (1952). Walnut aphid investigations: 1951 tests on Payne walnuts help develop economical control program under northern California conditions. University of California Agriculture and Natural Resources.
Chicago-referens (17:e uppl.)Michelbacher, A., O. Bacon, och W. Wade. Walnut Aphid Investigations: 1951 Tests on Payne Walnuts Help Develop Economical Control Program Under Northern California Conditions. University of California Agriculture and Natural Resources, 1952.
MLA-referens (9:e uppl.)Michelbacher, A., et al. Walnut Aphid Investigations: 1951 Tests on Payne Walnuts Help Develop Economical Control Program Under Northern California Conditions. University of California Agriculture and Natural Resources, 1952.
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