Gaya APA
BUTLER, E. (2020).
AN INTRODUCTION TO ENTREPRENEURSHIP (Cet. Pertama).
London, Inggris:
The Institute of Economic Affairs.
Gaya MLA
BUTLER, EAMONN.
"AN INTRODUCTION TO ENTREPRENEURSHIP".
Cet. Pertama
London, Inggris:
The Institute of Economic Affairs,
2020.
E-Book.