International Navigation Congress Baltimore, Md. (1961). XXe Congrès International de Navigation: = Sect. 1, Inland navigation; 3, Subject Measures to be taken to ensure uninterrupted day and night navigation under all weather conditions. General-Secretariat P.I.A.N.C.
Chicago-Zitierstil (17. Ausg.)International Navigation Congress Baltimore, Md. XXe Congrès International De Navigation: = Sect. 1, Inland Navigation; 3, Subject Measures to Be Taken to Ensure Uninterrupted Day and Night Navigation Under All Weather Conditions. Brussels: General-Secretariat P.I.A.N.C, 1961.
MLA-Zitierstil (9. Ausg.)International Navigation Congress Baltimore, Md. XXe Congrès International De Navigation: = Sect. 1, Inland Navigation; 3, Subject Measures to Be Taken to Ensure Uninterrupted Day and Night Navigation Under All Weather Conditions. General-Secretariat P.I.A.N.C, 1961.