Helianthus tuberosus. County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014. Посетен на 26 април 2019 г.
"Jerusalem ArtichokeАрхив на оригинала от 2009-11-28 в Wayback Machine.", Commercial Vegetable Production Guides, Oregon State University, The effort to save the family farm, however, was not a part of our nation's goal to control the farm market, so falsifications and inaccurate understandings forced the closure of this effort. In a phone call from then Sec. of Agriculture, John Block, it was stated, "We don't want to save the family farm, but need to eliminate a certain percentage of them". Later, a book was published,
"Jerusalem ArtichokeАрхив на оригинала от 2009-11-28 в Wayback Machine.", Commercial Vegetable Production Guides, Oregon State University, The effort to save the family farm, however, was not a part of our nation's goal to control the farm market, so falsifications and inaccurate understandings forced the closure of this effort. In a phone call from then Sec. of Agriculture, John Block, it was stated, "We don't want to save the family farm, but need to eliminate a certain percentage of them". Later, a book was published,
worldcat.org
Huxley, Anthony Julian. The New Royal Horticultural Society dictionary of gardening. Лондон, Macmillan Publishers, 1992. ISBN 978-0-333-47494-5. OCLC 29360744. (на английски)
