Cita APA (7th ed.)

International Labour Office & Ebel, K. H. (1969). Construction skills. CIRF Publications, ILO.

Cita Chicago (17th ed.)

International Labour Office i Karl H. Ebel. Construction Skills. Geneve: CIRF Publications, ILO, 1969.

Cita MLA (8th ed.)

International Labour Office i Karl H. Ebel. Construction Skills. CIRF Publications, ILO, 1969.