Gaya APA
Roberts, Wess. (1990).
Leadership Secrets of Attila The Hun (1990).
USA:
Warner Books.
Gaya Chicago
Roberts, Wess.
Leadership Secrets of Attila The Hun.
1990
USA:
Warner Books,
1990.
Text.
Gaya MLA
Roberts, Wess.
Leadership Secrets of Attila The Hun.
1990
USA:
Warner Books,
1990.
Text.
Gaya Turabian
Roberts, Wess.
Leadership Secrets of Attila The Hun.
1990
USA:
Warner Books,
1990.
Print.