Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (1972). Civil engineering technician. Institution of Civil Engineers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Civil Engineering Technician. London: Institution of Civil Engineers, 1972.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Civil Engineering Technician. Institution of Civil Engineers, 1972.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.