Pride, W. M., & O. C. Ferrell. (1995). Marketing: Concepts and Strategies (9th. st.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Pride, William M., agus O. C. Ferrell. Marketing: Concepts and Strategies. 9th. st. Boston, USA: Houghton Mifflin, 1995.
Lua MLA (9ú heag.)Pride, William M., agus O. C. Ferrell. Marketing: Concepts and Strategies. 9th. st. Houghton Mifflin, 1995.