APA (7th ed.) Citation

Heikkilä, P. (1991). Improving the quality of crushed rock aggregate. Finnish Acad. of Technology.

Chicago Style (17th ed.) Citation

Heikkilä, Pertti. Improving the Quality of Crushed Rock Aggregate. Helsinki: Finnish Acad. of Technology, 1991.

MLA (9th ed.) Citation

Heikkilä, Pertti. Improving the Quality of Crushed Rock Aggregate. Finnish Acad. of Technology, 1991.

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