Cita APA (7a ed.)

Johansen, K., & Katborg, P. M. (1972). Yield-line formulae for slabs. Cement and Concrete Association.

Cita Chicago Style (17a ed.)

Johansen, K.W, y Pauline M. Katborg. Yield-line Formulae for Slabs. London: Cement and Concrete Association, 1972.

Cita MLA (9a ed.)

Johansen, K.W, y Pauline M. Katborg. Yield-line Formulae for Slabs. Cement and Concrete Association, 1972.