Seppälä, A. J. (1946). Variations in the pneumatic cell system of the temporal bone: Acute otitis media and complications in varying types of pneumatization.
Chicago Style (17th ed.) CitationSeppälä, A. J. Variations in the Pneumatic Cell System of the Temporal Bone: Acute Otitis Media and Complications in Varying Types of Pneumatization. 1946.
MLA (8th ed.) CitationSeppälä, A. J. Variations in the Pneumatic Cell System of the Temporal Bone: Acute Otitis Media and Complications in Varying Types of Pneumatization. 1946.
Warning: These citations may not always be 100% accurate.