Gaya APA
Programed readers : for pupils of english as a second/third language book 4. (1970).
tempaterbit:
penerbit.
Gaya Chicago
Programed readers : for pupils of english as a second/third language book 4.
Edisi.
tempaterbit:
penerbit,
1970.
Text.
Gaya MLA
Programed readers : for pupils of english as a second/third language book 4.
Edisi.
tempaterbit:
penerbit,
1970.
Text.
Gaya Turabian
Programed readers : for pupils of english as a second/third language book 4.
tempaterbit:
penerbit,
1970.
Print.