Lacey, R. J., Belcher, J., & Croft, P. R. (2012). Validity of two simple measures for estimating life-course socio-economic position in cross-sectional postal survey data in an older population: Results from the North Staffordshire Osteoarthritis Project (NorStOP). BioMed Central.
शिकागो स्टाइल उद्धरणLacey, Rosie J., John Belcher, और Peter R. Croft. Validity of Two Simple Measures for Estimating Life-course Socio-economic Position in Cross-sectional Postal Survey Data in an Older Population: Results From the North Staffordshire Osteoarthritis Project (NorStOP). BioMed Central, 2012.
एमएलए उद्धरणLacey, Rosie J., John Belcher, और Peter R. Croft. Validity of Two Simple Measures for Estimating Life-course Socio-economic Position in Cross-sectional Postal Survey Data in an Older Population: Results From the North Staffordshire Osteoarthritis Project (NorStOP). BioMed Central, 2012.