APA (7th ed.) Citation
BIRDSALL, W. (1992). WHEN BENEFITS ARE DIFFICULT TO MEASURE. PERGAMON PRESS.
Chicago Style (17th ed.) Citation
BIRDSALL, W. WHEN BENEFITS ARE DIFFICULT TO MEASURE. NUEVA YORK: PERGAMON PRESS, 1992.
MLA (9th ed.) Citation
BIRDSALL, W. WHEN BENEFITS ARE DIFFICULT TO MEASURE. PERGAMON PRESS, 1992.
Warning: These citations may not always be 100% accurate.