Gaya APA
Spencer, Julia. (1994).
Principles of international marketing .
Oxford:
Blackwell Business.
Gaya Chicago
Spencer, Julia.
Principles of international marketing.
Oxford:
Blackwell Business,
1994.
Buku.
Gaya MLA
Spencer, Julia.
Principles of international marketing.
Oxford:
Blackwell Business,
1994.
Buku.
Gaya Turabian
Spencer, Julia.
Principles of international marketing.
Oxford:
Blackwell Business,
1994.
Buku.