Cita APA (7a ed.)

Heyne, P., & Johnson, T. (1976). Toward economic understanding. Science Research Associates, Inc.

Cita Chicago Style (17a ed.)

Heyne, Paul, y Thomas Johnson. Toward Economic Understanding. Chicago [etc.]: Science Research Associates, Inc, 1976.

Cita MLA (9a ed.)

Heyne, Paul, y Thomas Johnson. Toward Economic Understanding. Science Research Associates, Inc, 1976.