APA (7th ed.) Citation

Eckert, M., Ebert, D. D., Lehr, D., Sieland, B., & Berking, M. (2018). Does SMS-Support Make a Difference? Effectiveness of a Two-Week Online-Training to Overcome Procrastination. A Randomized Controlled Trial. Frontiers in psychology, 9, 1103. https://doi.org/10.3389/fpsyg.2018.01103

Chicago Style (17th ed.) Citation

Eckert, Marcus, David D. Ebert, Dirk Lehr, Bernhard Sieland, and Matthias Berking. "Does SMS-Support Make a Difference? Effectiveness of a Two-Week Online-Training to Overcome Procrastination. A Randomized Controlled Trial." Frontiers in Psychology 9 (2018): 1103. https://doi.org/10.3389/fpsyg.2018.01103.

MLA (9th ed.) Citation

Eckert, Marcus, et al. "Does SMS-Support Make a Difference? Effectiveness of a Two-Week Online-Training to Overcome Procrastination. A Randomized Controlled Trial." Frontiers in Psychology, vol. 9, 2018, p. 1103, https://doi.org/10.3389/fpsyg.2018.01103.

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