The best source of people with these qualifications is a local AV society or failing that, try other horticultural groups like a garden club. If you go to the web site of the AVSA (African Violet Society of America) at www.avsa.org you will find a lookup feature that will let you find if there is an AV Club in your town. In Canada contact the AVSC (African Violet Society of Canada) at:
4627 Verona Drive, NW Calgary, AB T3A 0P5