Pathy MJ (2006). "Appendix 1: Conversion of SI Units to Standard Units". Principles and practice of geriatric medicine. Vol. 2 (4th ed.). Chichester [u.a.]: Wiley. p. Appendix. doi:10.1002/047009057X.app01. ISBN9780470090558.
Pathy MJ (2006). "Appendix 1: Conversion of SI Units to Standard Units". Principles and practice of geriatric medicine. Vol. 2 (4th ed.). Chichester [u.a.]: Wiley. p. Appendix. doi:10.1002/047009057X.app01. ISBN9780470090558.