APA
Safi A., Grandoch A., Nickenig H., Zöller J. E. & Kreppel M. (20180611). The importance of lymph node ratio for locoregional recurrence of squamous cell carcinoma of the tongue. : Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery.
Chicago
Safi Ali-Farid, Grandoch Andrea, Nickenig Hans-Joachim, Zöller Joachim E and Kreppel Matthias. 20180611. The importance of lymph node ratio for locoregional recurrence of squamous cell carcinoma of the tongue. : Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery.
Harvard
Safi A., Grandoch A., Nickenig H., Zöller J. E. and Kreppel M. (20180611). The importance of lymph node ratio for locoregional recurrence of squamous cell carcinoma of the tongue. : Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery.
MLA
Safi Ali-Farid, Grandoch Andrea, Nickenig Hans-Joachim, Zöller Joachim E and Kreppel Matthias. The importance of lymph node ratio for locoregional recurrence of squamous cell carcinoma of the tongue. : Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery. 20180611.