Não informado. (2018). Research Report S. U.S. Army Engineer Waterways Experiment Station.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Research Report S. Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 2018.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Research Report S. U.S. Army Engineer Waterways Experiment Station, 2018.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.