Engstrom, T. W., & Larson, R. C. (1988). The best of Ted Engstrom on personal excellence and leadership. Here's Life Publishers.
Цитирование в стиле Чикаго (17-е изд.)Engstrom, Theodore Wilhelm, и Robert C. Larson. The Best of Ted Engstrom on Personal Excellence and Leadership. San Bernardino: Here's Life Publishers, 1988.
Цитирование MLA (9-е изд.)Engstrom, Theodore Wilhelm, и Robert C. Larson. The Best of Ted Engstrom on Personal Excellence and Leadership. Here's Life Publishers, 1988.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.