Gaya APA
Levitt , theodore. (1986).
Harvard Business Review Nos. 4-6 1986 .
USA:
Harvester Wheatsheaf.
Gaya Chicago
Levitt , theodore.
Harvard Business Review Nos. 4-6 1986.
USA:
Harvester Wheatsheaf,
1986.
Monograf.
Gaya MLA
Levitt , theodore.
Harvard Business Review Nos. 4-6 1986.
USA:
Harvester Wheatsheaf,
1986.
Monograf.
Gaya Turabian
Levitt , theodore.
Harvard Business Review Nos. 4-6 1986.
USA:
Harvester Wheatsheaf,
1986.
Monograf.