Cita APA (7a ed.)

Birley, S., & Westhead, P. (1994). New producer services businesses: Are they any different from new manufacturing ventures? [s.n.].

Cita Chicago Style (17a ed.)

Birley, Sue, y Paul Westhead. New Producer Services Businesses: Are They Any Different from New Manufacturing Ventures? [S.l.]: [s.n.], 1994.

Cita MLA (9a ed.)

Birley, Sue, y Paul Westhead. New Producer Services Businesses: Are They Any Different from New Manufacturing Ventures? [s.n.], 1994.