Citazione Stile APA (7a Edizione)

Ritter, A., & Sankey, H. R. (1879). Elementary theory and calculation of iron bridges and roofs. Spon.

Citazione stile Chigago Style (17a edizione)

Ritter, August, e H. R. Sankey. Elementary Theory and Calculation of Iron Bridges and Roofs. London: Spon, 1879.

Citatione MLA (8a ed.)

Ritter, August, e H. R. Sankey. Elementary Theory and Calculation of Iron Bridges and Roofs. Spon, 1879.