Karstein, H. (1969). New horizons in marketing Vol II. Author.
Lua i Stíl Chicago (17ú heag.)Karstein, H. New Horizons in Marketing Vol II. Bombay: Author, 1969.
Lua MLA (9ú heag.)Karstein, H. New Horizons in Marketing Vol II. Author, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.