APA (7th ed.) Citation

Baltes, M. M., Wahl, H., & Schmid-Furstoss, U. (1990). The daily life of elderly Germans: Activity patterns, personal control, and functional health. The journals of gerontology, 45(4), . https://doi.org/10.1093/geronj/45.4.P173

Chicago Style (17th ed.) Citation

Baltes, Margret M., Hans-Werner Wahl, and Ulrich Schmid-Furstoss. "The Daily Life of Elderly Germans: Activity Patterns, Personal Control, and Functional Health." The Journals of Gerontology 45, no. 4 (1990). https://doi.org/10.1093/geronj/45.4.P173.

MLA (9th ed.) Citation

Baltes, Margret M., et al. "The Daily Life of Elderly Germans: Activity Patterns, Personal Control, and Functional Health." The Journals of Gerontology, vol. 45, no. 4, 1990, https://doi.org/10.1093/geronj/45.4.P173.