Não informado. (1961). Netherlands Journal of Sea Research. Netherlands Institute for Sea Research.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Netherlands Journal of Sea Research. Texel, Holanda: Netherlands Institute for Sea Research, 1961.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Netherlands Journal of Sea Research. Netherlands Institute for Sea Research, 1961.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.