Lens, J. (1977). Bloedende Oesophagusvarices.
Chicago Style (17th ed.) CitationLens, Jaap. Bloedende Oesophagusvarices. 1977.
MLA (9th ed.) CitationLens, Jaap. Bloedende Oesophagusvarices. 1977.
Warning: These citations may not always be 100% accurate.