Keith, L. H. (1991). Environmental sampling and analysis, A Practical guide.
Čikaški stil citiranjaKeith, Lawrence H. Environmental Sampling and Analysis, A Practical Guide. London, Lewis Publishers, 1991.
MLA način citiranjaKeith, Lawrence H. Environmental Sampling and Analysis, A Practical Guide. 1991.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.