Welch, Paul Smith
Limnological methods
McGraw-Hill, 1948
Buku Teks
Batterson, Ted R.
Daftar istilah limnologi (Glossary of Limnological Terms)
Departemen Pertanian, 1989
Buku Referensi
Wetzel, Robert A.
Limnological analyses / Robert G. Wetzel, Gene E. Likens
Springer-Verlag, 1990
Buku Teks
A method of psychiatry
Lea & Febiger , 1985
Buku Teks
Znaniecki, Florian
The Method of sociology
Rinehart & Company, 1934
Buku Teks