APA-Zitierstil (7. Ausg.)

Yip, G. S. (1984). Barriers to entry: A corporate strategy perspective (2. print.). Lexington Books.

Chicago-Zitierstil (17. Ausg.)

Yip, George S. Barriers to Entry: A Corporate Strategy Perspective. 2. print. Lexington, Mass. <<[u.a.]>>: Lexington Books, 1984.

MLA-Zitierstil (9. Ausg.)

Yip, George S. Barriers to Entry: A Corporate Strategy Perspective. 2. print. Lexington Books, 1984.