Cita APA (7th ed.)

Chan, L. K. C., Lakonishok, J., & Sougiannis, T. (1999). The stock market valuation of research and development expenditures. National Bureau of Economic Research.

Cita Chicago (17th ed.)

Chan, Louis K. C., Jose Lakonishok, i Theodore Sougiannis. The Stock Market Valuation of Research and Development Expenditures. Cambridge: National Bureau of Economic Research, 1999.

Cita MLA (9th ed.)

Chan, Louis K. C., et al. The Stock Market Valuation of Research and Development Expenditures. National Bureau of Economic Research, 1999.