APA
Fisher R. S., Krevsky B., . (1993). Motor disorders of the gastrointestinal tract: What´s new & what to do ./ Robert S. Fisher. New York: Academy Professional Information Services.
Chicago
Fisher Robert S, Krevsky Benjamin, . 1993. Motor disorders of the gastrointestinal tract: What´s new & what to do ./ Robert S. Fisher. New York: Academy Professional Information Services.
Harvard
Fisher R. S., Krevsky B., . (1993). Motor disorders of the gastrointestinal tract: What´s new & what to do ./ Robert S. Fisher. New York: Academy Professional Information Services.
MLA
Fisher Robert S, Krevsky Benjamin, . Motor disorders of the gastrointestinal tract: What´s new & what to do ./ Robert S. Fisher. New York: Academy Professional Information Services. 1993.