APA (7th ed.) Citation

Aarkrog, A., & Lippert, J. (1967). Environmental radioactivity in Greenland in 1966. Gjellerup.

Chicago Style (17th ed.) Citation

Aarkrog, A., and J. Lippert. Environmental Radioactivity in Greenland in 1966. Copenhagen: Gjellerup, 1967.

MLA (9th ed.) Citation

Aarkrog, A., and J. Lippert. Environmental Radioactivity in Greenland in 1966. Gjellerup, 1967.

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