Cita APA (7a ed.)

Drucker, P. F., & Flax Marco, E. (1967). Las fronteras del porvenir: = Landmarks of tomorrow. Hobbs-Sudamericana.

Cita Chicago Style (17a ed.)

Drucker, Peter Ferdinand, y Enrique Flax Marco. Las Fronteras Del Porvenir: = Landmarks of Tomorrow. Buenos Aires: Hobbs-Sudamericana, 1967.

Cita MLA (8a ed.)

Drucker, Peter Ferdinand, y Enrique Flax Marco. Las Fronteras Del Porvenir: = Landmarks of Tomorrow. Hobbs-Sudamericana, 1967.