APA (7th ed.) Citation

Littman, A. J., Bratman, G. N., Lehavot, K., Engel, C. C., Fortney, J. C., Peterson, A., . . . Frumkin, H. (2021). Nature versus urban hiking for Veterans with post-traumatic stress disorder: A pilot randomised trial conducted in the Pacific Northwest USA. BMJ open, 11(9), e051885. https://doi.org/10.1136/bmjopen-2021-051885

Chicago Style (17th ed.) Citation

Littman, Alyson J., et al. "Nature Versus Urban Hiking for Veterans with Post-traumatic Stress Disorder: A Pilot Randomised Trial Conducted in the Pacific Northwest USA." BMJ Open 11, no. 9 (2021): e051885. https://doi.org/10.1136/bmjopen-2021-051885.

MLA (9th ed.) Citation

Littman, Alyson J., et al. "Nature Versus Urban Hiking for Veterans with Post-traumatic Stress Disorder: A Pilot Randomised Trial Conducted in the Pacific Northwest USA." BMJ Open, vol. 11, no. 9, 2021, p. e051885, https://doi.org/10.1136/bmjopen-2021-051885.