Luck, D. J., & Ferrell, O. C. (1985). Marketing strategy and plans (2nd ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Luck, David Johnston, agus O. C. Ferrell. Marketing Strategy and Plans. 2nd ed. Englewood Cliffs, N.J.: Prentice-Hall, 1985.
Lua MLA (9ú heag.)Luck, David Johnston, agus O. C. Ferrell. Marketing Strategy and Plans. 2nd ed. Prentice-Hall, 1985.