Life, expeditions, collections and unpublished field notes of Dr. Emil Heinrich Snethlage (Snethlage 2002)
Snethlage, Rotger Michael. 2002. Life, expeditions, collections and unpublished field notes of Dr. Emil Heinrich Snethlage. Mily Crevels, Simon van de Kerke, Sérgio Meira & Hein van der Voort (eds.), Current Studies on South American Languages [Indigenous Languages of Latin America, 3], p. 89-102. Leiden: Research School of Asian, African, and Amerindian Studies (CNWS).