Gaya APA
English intensive course book 1. (2002).
Semarang:
English DepartmentFBS - UNNES.
Gaya Chicago
English intensive course book 1.
.
Semarang:
English DepartmentFBS - UNNES,
2002.
.
Gaya MLA
English intensive course book 1.
.
Semarang:
English DepartmentFBS - UNNES,
2002.
.
Gaya Turabian
English intensive course book 1.
Semarang:
English DepartmentFBS - UNNES,
2002.
.