APA Format
Fortenberry, John L. . (). Health... : Michael Porter's five forces model. ( Ket. Lihat halaman 191-197 ) ( Bab. 28 ). : London: Jones and Bartlett Learning, 2010
MLA Format
Fortenberry, John L. . Health... : Michael Porter's five forces model. ( Ket. Lihat halaman 191-197 ) ( Bab. 28 ). : London: Jones and Bartlett Learning, 2010,
Australian/Harvard Format
Fortenberry, John L. . . Health... : Michael Porter's five forces model. ( Ket. Lihat halaman 191-197 ) ( Bab. 28 ). London: Jones and Bartlett Learning, 2010, 
Warning: These citations may not always be 100% accurate.