Gaya APA
Management Marketing 2011. (2011).
Singapura:
MC GROW HILL.
Gaya Chicago
Management Marketing 2011.
.
Singapura:
MC GROW HILL,
2011.
Buku.
Gaya MLA
Management Marketing 2011.
.
Singapura:
MC GROW HILL,
2011.
Buku.
Gaya Turabian
Management Marketing 2011.
Singapura:
MC GROW HILL,
2011.
Buku.