Smedts HP, de Vries JH, Rakhshandehroo M, et al. (February 2009). "High maternal vitamin E intake by diet or supplements is associated with congenital heart defects in the offspring". BJOG. 116 (3): 416–23. doi:10.1111/j.1471-0528.2008.01957.x. PMID19187374. S2CID22276050.
Robinson, M. A. (2018). Using multi-item psychometric scales for research and practice in human resource management. Human Resource Management, 57(3), 739–750. https://dx.doi.org/10.1002/hrm.21852 (open-access)
A copy of the instrument was published in the Journal of the Statistical Society, Volume 1, Issue 1, 1838, pages 5–13. Fourth Annual Report of the Council of the Statistical Society of London, JSTORi315562
Smedts HP, de Vries JH, Rakhshandehroo M, et al. (February 2009). "High maternal vitamin E intake by diet or supplements is associated with congenital heart defects in the offspring". BJOG. 116 (3): 416–23. doi:10.1111/j.1471-0528.2008.01957.x. PMID19187374. S2CID22276050.
Smedts HP, de Vries JH, Rakhshandehroo M, et al. (February 2009). "High maternal vitamin E intake by diet or supplements is associated with congenital heart defects in the offspring". BJOG. 116 (3): 416–23. doi:10.1111/j.1471-0528.2008.01957.x. PMID19187374. S2CID22276050.