Hiebeler, R. (1998). Best Practices Building Your Business With Customer-focused Solutions Robert Hiebeler, Thomas B. Kelly, Charles Ketteman. Simon & Schuster.
Chicago-стиль цитированияHiebeler, Robert. Best Practices Building Your Business With Customer-focused Solutions Robert Hiebeler, Thomas B. Kelly, Charles Ketteman. Simon & Schuster, 1998.
MLA-цитированиеHiebeler, Robert. Best Practices Building Your Business With Customer-focused Solutions Robert Hiebeler, Thomas B. Kelly, Charles Ketteman. Simon & Schuster, 1998.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.