Weir, W. W. (1936). Soil science: Its, principles and practice. J. B. Lippincott.
Citazione stile Chigago Style (17a edizione)Weir, Wilbert Walter. Soil Science: Its, Principles and Practice. Chicago: J. B. Lippincott, 1936.
Citatione MLA (9a ed.)Weir, Wilbert Walter. Soil Science: Its, Principles and Practice. J. B. Lippincott, 1936.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.