APA
"Chow I., "Holbert N. & "Kelley L.Business strategy. Singapore: .
Chicago
"Chow Irene", "Holbert Neil" and "Kelley Lane".Business strategy. Singapore: .
Harvard
"Chow I., "Holbert N. and "Kelley L.Business strategy. Singapore: .
MLA
"Chow Irene", "Holbert Neil" and "Kelley Lane".Singapore: . .