Creste, J.E. and de Lima, L.A. (1995) “The influence of different rootstocks and the sampling method in macronutrients concentration in leaves of Satsuma mandarin trees (Citrus unshiu, Marc.)”, Pesquisa Agropecuaria Brasileira, 30(1), pp. 75–79. doi:10.1590/S1678-3921.pab1995.v30.4277.