Gaya APA
Certo, S, C., Certo, S, T. (2019).
MODERN MANAGEMENT : Concepts and Skills .
United Kingdom:
PEARSON PRENTICE HALL.
Gaya MLA
Certo, Samuel, C.., Certo, S., Travis.
"MODERN MANAGEMENT : Concepts and Skills".
United Kingdom:
PEARSON PRENTICE HALL,
2019.
Text.