Gaya APA

Placement Kelas 7. (2005). : Apress.

Gaya Chicago

Placement Kelas 7. . : Apress, 2005. Floppy Disk.

Gaya MLA

Placement Kelas 7. . : Apress, 2005. Floppy Disk.

Gaya Turabian

Placement Kelas 7. : Apress, 2005. Floppy Disk.