APA

Hecker M., Runkel F. & Voelp A. (20020919). [Treatment of chronic bronchitis with ivy leaf special extract--multicenter post-marketing surveillance study in 1,350 patients]. : Forschende Komplementarmedizin und klassische Naturheilkunde = Research in complementary and natural classical medicine.

Chicago

Hecker M, Runkel F and Voelp A. 20020919. [Treatment of chronic bronchitis with ivy leaf special extract--multicenter post-marketing surveillance study in 1,350 patients]. : Forschende Komplementarmedizin und klassische Naturheilkunde = Research in complementary and natural classical medicine.

Harvard

Hecker M., Runkel F. and Voelp A. (20020919). [Treatment of chronic bronchitis with ivy leaf special extract--multicenter post-marketing surveillance study in 1,350 patients]. : Forschende Komplementarmedizin und klassische Naturheilkunde = Research in complementary and natural classical medicine.

MLA

Hecker M, Runkel F and Voelp A. [Treatment of chronic bronchitis with ivy leaf special extract--multicenter post-marketing surveillance study in 1,350 patients]. : Forschende Komplementarmedizin und klassische Naturheilkunde = Research in complementary and natural classical medicine. 20020919.