APA (7th ed.) Citation

Varis, K. (1987). Psychosomatic factors in gastrointetsinal disorders. [s.n.].

Chicago Style (17th ed.) Citation

Varis, K. Psychosomatic Factors in Gastrointetsinal Disorders. [S.l.]: [s.n.], 1987.

MLA (9th ed.) Citation

Varis, K. Psychosomatic Factors in Gastrointetsinal Disorders. [s.n.], 1987.

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