Gaya APA

Abell, D, F., Hammond, J, S. (1979). Strategic Market Planning: Problems and Analytical Approaches . Englewood: Prentice Hall International.

Gaya MLA

Abell, Derek, F., Hammond, John, S. "Strategic Market Planning: Problems and Analytical Approaches". Englewood: Prentice Hall International, 1979. Teksbook.