APA (7th ed.) Citation

Zilliacus, H. (1987). DeGeer moraines in Finland and the annual moraine problem. Geograph. Soc. of Finland.

Chicago Style (17th ed.) Citation

Zilliacus, Harry. DeGeer Moraines in Finland and the Annual Moraine Problem. Helsinki: Geograph. Soc. of Finland, 1987.

MLA (9th ed.) Citation

Zilliacus, Harry. DeGeer Moraines in Finland and the Annual Moraine Problem. Geograph. Soc. of Finland, 1987.