Easter School in Agricultural Science (11th : University of Nottingham), Hallsworth, E. G., & Crawford, D. V. (1965). Experimental pedology: Proceedings of the Eleventh Easter School in Agricultural Science, University of Nottingham, 1964. Butterworths.
Cytowanie według stylu Chicago (wyd. 17)Easter School in Agricultural Science (11th : University of Nottingham), E. G. Hallsworth, i D. V. Crawford. Experimental Pedology: Proceedings of the Eleventh Easter School in Agricultural Science, University of Nottingham, 1964. London: Butterworths, 1965.
Cytowanie według stylu MLA (wyd. 9)Easter School in Agricultural Science (11th : University of Nottingham), et al. Experimental Pedology: Proceedings of the Eleventh Easter School in Agricultural Science, University of Nottingham, 1964. Butterworths, 1965.