Hager, Thorolf. "Vorwort". Band 1 Manual der Koloproktologie, edited by Alexander Herold and Thomas Schiedeck, Berlin, Boston: De Gruyter, 2019, pp. V-VI. https://doi.org/10.1515/9783110614442-201
Hager, T. (2019). Vorwort. In A. Herold & T. Schiedeck (Ed.), Band 1 Manual der Koloproktologie (pp. V-VI). Berlin, Boston: De Gruyter. https://doi.org/10.1515/9783110614442-201
Hager, T. 2019. Vorwort. In: Herold, A. and Schiedeck, T. ed. Band 1 Manual der Koloproktologie. Berlin, Boston: De Gruyter, pp. V-VI. https://doi.org/10.1515/9783110614442-201
Hager, Thorolf. "Vorwort" In Band 1 Manual der Koloproktologie edited by Alexander Herold and Thomas Schiedeck, V-VI. Berlin, Boston: De Gruyter, 2019. https://doi.org/10.1515/9783110614442-201
Hager T. Vorwort. In: Herold A, Schiedeck T (ed.) Band 1 Manual der Koloproktologie. Berlin, Boston: De Gruyter; 2019. p.V-VI. https://doi.org/10.1515/9783110614442-201
