Cita APA (7th ed.)

NORTH KLAUS. (1992). ENVIRONMENTAL BUSINESS MANAGEMENT. INTERNATIONAL LABOUR ORGANIZATION.

Cita Chicago (17th ed.)

NORTH KLAUS. ENVIRONMENTAL BUSINESS MANAGEMENT. GENEVA: INTERNATIONAL LABOUR ORGANIZATION, 1992.

Cita MLA (9th ed.)

NORTH KLAUS. ENVIRONMENTAL BUSINESS MANAGEMENT. INTERNATIONAL LABOUR ORGANIZATION, 1992.