APA (7th ed.) Citation

Lander, J., Wallraf, S., Pieper, D., Klawunn, R., Altawil, H., Dierks, M., & John, C. Recruiting participants for focus groups in health research: A meta-research study. BMC.

Chicago Style (17th ed.) Citation

Lander, Jonas, Simon Wallraf, Dawid Pieper, Ronny Klawunn, Hala Altawil, Marie-Luise Dierks, and Cosima John. Recruiting Participants for Focus Groups in Health Research: A Meta-research Study. BMC.

MLA (9th ed.) Citation

Lander, Jonas, et al. Recruiting Participants for Focus Groups in Health Research: A Meta-research Study. BMC.