APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, & Birkler, J. L. (2003). Competition and innovation in the U.S. fixed-wing military aircraft industry. RAND.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, ба J. L. Birkler. Competition and Innovation in the U.S. Fixed-wing Military Aircraft Industry. Santa Monica, CA: RAND, 2003.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, ба J. L. Birkler. Competition and Innovation in the U.S. Fixed-wing Military Aircraft Industry. RAND, 2003.