Druzhinin, G. V. (1980). Osnovnye zakonomernosti stroeni︠i︡a beregov ozer Severnogo Kazakhstana. Nauka, Leningr. otd-nie.
Chicago Style (17th ed.) CitationDruzhinin, Gennadiĭ Viktorovich. Osnovnye Zakonomernosti Stroeni︠i︡a Beregov Ozer Severnogo Kazakhstana. Leningrad: Nauka, Leningr. otd-nie, 1980.
MLA (8th ed.) CitationDruzhinin, Gennadiĭ Viktorovich. Osnovnye Zakonomernosti Stroeni︠i︡a Beregov Ozer Severnogo Kazakhstana. Nauka, Leningr. otd-nie, 1980.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.