APA Style
Petrokis, Lee. (2013).
National Geographic Our World : The Three Pigs (A Fairy Tale) (1).
Usa:
National Geographic Learning.
Chicago Style
Petrokis, Lee.
National Geographic Our World : The Three Pigs (A Fairy Tale).
1
Usa:
National Geographic Learning,
2013.
Printed Book.
MLA Style
Petrokis, Lee.
National Geographic Our World : The Three Pigs (A Fairy Tale).
1
Usa:
National Geographic Learning,
2013.
Printed Book.
Turabian Style
Petrokis, Lee.
National Geographic Our World : The Three Pigs (A Fairy Tale).
1
Usa:
National Geographic Learning,
2013.
Printed Book.