Cita APA (7a ed.)

MD, G., D, K., & AA, S. (2012). Sleep characteristics, sleep problems, and associations of self-efficacy among German university students. Dove Medical Press.

Cita Chicago Style (17a ed.)

MD, Gulewitsch, Kulessa D, y Schlarb AA. Sleep Characteristics, Sleep Problems, and Associations of Self-efficacy Among German University Students. Dove Medical Press, 2012.

Cita MLA (8a ed.)

MD, Gulewitsch, et al. Sleep Characteristics, Sleep Problems, and Associations of Self-efficacy Among German University Students. Dove Medical Press, 2012.