Gale Research Company & Dresser, P. D. (1989). New research centers: The supplement to the 13th edition of research centers directory. Gale Research Company.
Chicago-стиль цитированияGale Research Company and Peter D. Dresser. New Research Centers: The Supplement to the 13th Edition of Research Centers Directory. Detroit: Gale Research Company, 1989.
MLA-цитированиеGale Research Company and Peter D. Dresser. New Research Centers: The Supplement to the 13th Edition of Research Centers Directory. Gale Research Company, 1989.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.