(1996). Manual for soil and water analysis. Leiden: Backhuys publishers.
Chicago Style aipamenaManual for Soil and Water Analysis. Leiden: Backhuys publishers, 1996.
MLA aipamenaManual for Soil and Water Analysis. Leiden: Backhuys publishers, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.