Puthenveettil, N., Rajan, S., Mohan, A., Paul, J., & Kumar, L. (2018, January). Sphenopalatine ganglion block for treatment of post-dural puncture headache in obstetric patients: An observational study. Indian Journal of Anaesthesia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Puthenveettil, Nitu, Sunil Rajan, Anish Mohan, Jerry Paul, و Lakshmi Kumar. "Sphenopalatine Ganglion Block for Treatment of Post-dural Puncture Headache in Obstetric Patients: An Observational Study." Indian Journal of Anaesthesia Jan. 2018.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Puthenveettil, Nitu, et al. "Sphenopalatine Ganglion Block for Treatment of Post-dural Puncture Headache in Obstetric Patients: An Observational Study." Indian Journal of Anaesthesia, Jan. 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.