Cita APA

Dryden I G C. (1968). SI units: SI and related units: quick-reference conversion factors. British Coal Utilisation Research Association.

Citación estilo Chicago

Dryden I G C. SI Units: SI and Related Units: Quick-reference Conversion Factors. Leatherhead: British Coal Utilisation Research Association, 1968.

Cita MLA

Dryden I G C. SI Units: SI and Related Units: Quick-reference Conversion Factors. British Coal Utilisation Research Association, 1968.