JARABAK, Joseph R. Management of an Orthodontic Practice; C. V. Mosby, St Louis, 1965 (p, 24-64). Search in Google Scholar
ORMCO CORPORATION, 1332 South Lone Hill Road, Slenora, California. U.S.A. Search in Google Scholar
ROCKY MOUNTAIN DENTAL PRODUCTS, P.O. Box 1887, Denver, Colorado 80201, U.S.A. Search in Google Scholar
UNITEK CORPORATION, 950 Royal Oaks Drive, Monrovia, California 91016, U.S.A. Search in Google Scholar
