APA (7th ed.) Citation

Heikkinen, O., Tikkanen, M., & Laaksonen, K. (1979). Glacial flutings in northern Finnish Lapland.

Chicago Style (17th ed.) Citation

Heikkinen, Olavi, Matti Tikkanen, and Kyösti Laaksonen. Glacial Flutings in Northern Finnish Lapland. Helsinki, 1979.

MLA (9th ed.) Citation

Heikkinen, Olavi, et al. Glacial Flutings in Northern Finnish Lapland. 1979.