APA Style
Sverdrup, Keith A, Alyn C Duxbury, Alison B Duxbury. (2003).
An introduction to the world .
:
.
Chicago Style
Sverdrup, Keith A, Alyn C Duxbury, Alison B Duxbury.
An introduction to the world.
:
,
2003.
Text.
MLA Style
Sverdrup, Keith A, Alyn C Duxbury, Alison B Duxbury.
An introduction to the world.
:
,
2003.
Text.
Turabian Style
Sverdrup, Keith A, Alyn C Duxbury, Alison B Duxbury.
An introduction to the world.
:
,
2003.
Print.