Cita APA (7th ed.)

Cambridge Educational (Firm) & Ruffo, F. (2006). Bricklayers and stone masons. Cambridge Educational.

Cita Chicago (17th ed.)

Cambridge Educational (Firm) i Frank Ruffo. Bricklayers and Stone Masons. Lawrenceville, NJ: Cambridge Educational, 2006.

Cita MLA (8th ed.)

Cambridge Educational (Firm) i Frank Ruffo. Bricklayers and Stone Masons. Cambridge Educational, 2006.