APA-viite (7. p.)

Hollander, J. E. (2018). Signo de Wellens. McGraw-Hill Education LLC..

Chicago-viite (17. p.)

Hollander, Judd E. Signo De Wellens. New York, N.Y.: McGraw-Hill Education LLC., 2018.

MLA-viite (9. p.)

Hollander, Judd E. Signo De Wellens. McGraw-Hill Education LLC., 2018.