Cita APA (7a ed.)

(1954). 50 years of civil engineering 1904-1954. Christiani and Nielsen.

Cita Chicago Style (17a ed.)

50 Years of Civil Engineering 1904-1954. Buenos Aires: Christiani and Nielsen, 1954.

Cita MLA (9a ed.)

50 Years of Civil Engineering 1904-1954. Christiani and Nielsen, 1954.