APA (7th ed.) Citation

Davies, G., Santanello, N., Gerth, W., Lerner, D., Block, G., Davies, G. M., & Block, G. A. (1999). Validation of a migraine work and productivity loss questionnaire for use in migraine studies. Cephalalgia, 19(5), 497. https://doi.org/10.1046/j.1468-2982.1999.019005497.x

Chicago Style (17th ed.) Citation

Davies, GM, N. Santanello, W. Gerth, D. Lerner, GA Block, G M. Davies, and G A. Block. "Validation of a Migraine Work and Productivity Loss Questionnaire for Use in Migraine Studies." Cephalalgia 19, no. 5 (1999): 497. https://doi.org/10.1046/j.1468-2982.1999.019005497.x.

MLA (9th ed.) Citation

Davies, GM, et al. "Validation of a Migraine Work and Productivity Loss Questionnaire for Use in Migraine Studies." Cephalalgia, vol. 19, no. 5, 1999, p. 497, https://doi.org/10.1046/j.1468-2982.1999.019005497.x.