Cresser, M., & ...[et al.]. (1993). Soil chemistry and its applications. Cambridge University Press.
Dyfyniad Arddull ChicagoCresser, Malcolm, and ...[et al.]. Soil Chemistry and Its Applications. Cambridge: Cambridge University Press, 1993.
Dyfyniad MLACresser, Malcolm, and ...[et al.]. Soil Chemistry and Its Applications. Cambridge University Press, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.