Gaya APA

David, F, R., David, F, R. (2017). Strategic ManageMent concepts and cases ; A Competitive AdvAntAge ApproACh (Sixteenth edition). England: Pearson Education Limited.

Gaya MLA

David, Fred, R.., David, Forest, R.. "Strategic ManageMent concepts and cases ; A Competitive AdvAntAge ApproACh". Sixteenth edition England: Pearson Education Limited, 2017. eBook.