APA ציטוט

Oklas, J. (1990). Lakes and snails: Environmental and geotropoda in 1,500 Norwegian lakes, ponds and rivers. Universal Book Service.

Chicago Style (17th ed.) Citation

Oklas, Jan. Lakes and Snails: Environmental and Geotropoda in 1,500 Norwegian Lakes, Ponds and Rivers. [s.l.]: Universal Book Service, 1990.

ציטוט MLA

Oklas, Jan. Lakes and Snails: Environmental and Geotropoda in 1,500 Norwegian Lakes, Ponds and Rivers. Universal Book Service, 1990.