American Journal of Clinical Nutrition
Citing the DDST:
Frankenburg, W. K., & Dodds, J. B. (1967). Denver Developmental Screening Test. The Journal of Pediatrics, 71 (2), 181-191.
Citing the growth chart:
Hamill, P. V. V., Drizd, T. A., Johnson, C. L., Reed, R. B., Roche, A. F., et al. (1979). Physical growth: National Center for Health Statistics percentiles. Girls: Birth to 36 months physical growth NCHS percentiles. American Journal of Clinical Nutrition, 32, pp. 607-629.