Gaya APA
English in Foccus English in Physical Science. (1974).
London:
[s.n.].
Gaya Chicago
English in Foccus English in Physical Science.
.
London:
[s.n.],
1974.
Text.
Gaya MLA
English in Foccus English in Physical Science.
.
London:
[s.n.],
1974.
Text.
Gaya Turabian
English in Foccus English in Physical Science.
London:
[s.n.],
1974.
Print.