Não informado. (1977). IABSE Journal. International Association for Bridge and Structural Engineering.
Chicago (17e ed.) BronvermeldingNão informado. IABSE Journal. Zurich, Suíça: International Association for Bridge and Structural Engineering, 1977.
MLA (8e ed.) BronvermeldingNão informado. IABSE Journal. International Association for Bridge and Structural Engineering, 1977.
Let op: Deze citaties zijn niet altijd 100% accuraat.