Cita APA (7th ed.)

DICKSON D E N. (1991). IMPROVE YOUR BUSINESS: HANDBOOK. OXFORD UNIVERSITY PRESS.

Cita Chicago (17th ed.)

DICKSON D E N. IMPROVE YOUR BUSINESS: HANDBOOK. MUMBAI MADRAS: OXFORD UNIVERSITY PRESS, 1991.

Cita MLA (9th ed.)

DICKSON D E N. IMPROVE YOUR BUSINESS: HANDBOOK. OXFORD UNIVERSITY PRESS, 1991.