Cita APA (7a ed.)

Heszen-Niejodek, I., Gottschalk, L. A., & Januszek, M. (1999). Anxiety and hope during the course of three different medical illnesses: A longitudinal study. [s.n.].

Cita Chicago Style (17a ed.)

Heszen-Niejodek, Irena, Louis A. Gottschalk, y Maciej Januszek. Anxiety and Hope During the Course of Three Different Medical Illnesses: A Longitudinal Study. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

Heszen-Niejodek, Irena, et al. Anxiety and Hope During the Course of Three Different Medical Illnesses: A Longitudinal Study. [s.n.], 1999.