Gaya APA
First Things First:Supplementary Written Exercises. (1971).
London:
[s.n.].
Gaya Chicago
First Things First:Supplementary Written Exercises.
; 2.
London:
[s.n.],
1971.
Text.
Gaya MLA
First Things First:Supplementary Written Exercises.
; 2.
London:
[s.n.],
1971.
Text.
Gaya Turabian
First Things First:Supplementary Written Exercises.
London:
[s.n.],
1971.
Print.