APA (7th ed.) Citation

Virtanen, A. I. (1968). On nitrogen metabolism in milking cows. Suomalainen tiedeakatemia.

Chicago Style (17th ed.) Citation

Virtanen, A. I. On Nitrogen Metabolism in Milking Cows. Helsinki: Suomalainen tiedeakatemia, 1968.

MLA (9th ed.) Citation

Virtanen, A. I. On Nitrogen Metabolism in Milking Cows. Suomalainen tiedeakatemia, 1968.

Warning: These citations may not always be 100% accurate.