Cita APA (7th ed.)

Engstrom, T. W., & Larson, R. C. (1988). The best of Ted Engstrom on personal excellence and leadership. Here's Life Publishers.

Cita Chicago (17th ed.)

Engstrom, Theodore Wilhelm, i Robert C. Larson. The Best of Ted Engstrom on Personal Excellence and Leadership. San Bernardino: Here's Life Publishers, 1988.

Cita MLA (9th ed.)

Engstrom, Theodore Wilhelm, i Robert C. Larson. The Best of Ted Engstrom on Personal Excellence and Leadership. Here's Life Publishers, 1988.