APA (7th ed.) Citation

Aarkrog, A., & Lippert, J. (1960). Environmental radioactivity at Risö 1959. Gjellerup.

Chicago Style (17th ed.) Citation

Aarkrog, A., and J. Lippert. Environmental Radioactivity at Risö 1959. Copenhagen: Gjellerup, 1960.

MLA (9th ed.) Citation

Aarkrog, A., and J. Lippert. Environmental Radioactivity at Risö 1959. Gjellerup, 1960.

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