Gaya APA
Clarke, Liz. (1994).
Essence of change .
London:
Prentice Hall.
Gaya Chicago
Clarke, Liz.
Essence of change.
London:
Prentice Hall,
1994.
Text.
Gaya MLA
Clarke, Liz.
Essence of change.
London:
Prentice Hall,
1994.
Text.
Gaya Turabian
Clarke, Liz.
Essence of change.
London:
Prentice Hall,
1994.
Print.