Cita APA (7th ed.)

LEON ALEXIS. (2014). ENTERPRISE RESOURCE PLANNING (3RD ED.). MCGRAW HILL EDUCATION PVT LTD.

Cita Chicago (17th ed.)

LEON ALEXIS. ENTERPRISE RESOURCE PLANNING. 3RD ED. NEW DELHI: MCGRAW HILL EDUCATION PVT LTD, 2014.

Cita MLA (9th ed.)

LEON ALEXIS. ENTERPRISE RESOURCE PLANNING. 3RD ED. MCGRAW HILL EDUCATION PVT LTD, 2014.