APA

Peters H. P., Bos M., Seebregts L., Akkermans L. M., van Berge Henegouwen G. P., Bol E., Mosterd W. L. & de Vries W. R. (19990624). Gastrointestinal symptoms in long-distance runners, cyclists, and triathletes: prevalence, medication, and etiology. : The American journal of gastroenterology.

Chicago

Peters H P, Bos M, Seebregts L, Akkermans L M, van Berge Henegouwen G P, Bol E, Mosterd W L and de Vries W R. 19990624. Gastrointestinal symptoms in long-distance runners, cyclists, and triathletes: prevalence, medication, and etiology. : The American journal of gastroenterology.

Harvard

Peters H. P., Bos M., Seebregts L., Akkermans L. M., van Berge Henegouwen G. P., Bol E., Mosterd W. L. and de Vries W. R. (19990624). Gastrointestinal symptoms in long-distance runners, cyclists, and triathletes: prevalence, medication, and etiology. : The American journal of gastroenterology.

MLA

Peters H P, Bos M, Seebregts L, Akkermans L M, van Berge Henegouwen G P, Bol E, Mosterd W L and de Vries W R. Gastrointestinal symptoms in long-distance runners, cyclists, and triathletes: prevalence, medication, and etiology. : The American journal of gastroenterology. 19990624.