United States. National Park Service. Preservation Assistance Division. Preservation tech notes: Masonry. National Park Service, Preservation Assistance Division.
Citace podle Chicago (17th ed.)United States. National Park Service. Preservation Assistance Division. Preservation Tech Notes: Masonry. Washington, D.C.: National Park Service, Preservation Assistance Division.
Citace podle MLA (8th ed.)United States. National Park Service. Preservation Assistance Division. Preservation Tech Notes: Masonry. National Park Service, Preservation Assistance Division.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..