APA (7th ed.) Citation

Gjerde, V., Marisaldi, M., Oksavik, K., Olafsson, K., Spångberg, H., & Holst, B. Mandatory retrieval test to incentivize retrieval practice of physics principles. American Physical Society.

Chicago Style (17th ed.) Citation

Gjerde, Vegard, Martino Marisaldi, Kjellmar Oksavik, Kjartan Olafsson, Harald Spångberg, and Bodil Holst. Mandatory Retrieval Test to Incentivize Retrieval Practice of Physics Principles. American Physical Society.

MLA (9th ed.) Citation

Gjerde, Vegard, et al. Mandatory Retrieval Test to Incentivize Retrieval Practice of Physics Principles. American Physical Society.