Penn, J. (2009). Family and friends teacher's book 1. Oxford University Press.
Trích dẫn kiểu ChicagoPenn, Julie. Family and Friends Teacher's Book 1. Oxford University Press, 2009.
MLA CitationPenn, Julie. Family and Friends Teacher's Book 1. Oxford University Press, 2009.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.