Steadiness is reduced and motor unit discharge is more variable in old adults.

MLA

Laidlaw, Douglass H., et al. “Steadiness Is Reduced and Motor Unit Discharge Is More Variable in Old Adults.” Muscle & Nerve, vol. 23, no. 4, Apr. 2000, pp. 600–12. EBSCOhost, https://doi.org/10.1002/(SICI)1097-4598(200004)23:4<600::AID-MUS20>3.0.CO;2-D.

APA

Laidlaw, D. H., Bilodeau, M., Enoka, R. M., Laidlaw, D. H., Bilodeau, M., & Enoka, R. M. (2000). Steadiness is reduced and motor unit discharge is more variable in old adults. Muscle & Nerve, 23(4), 600–612. https://doi.org/10.1002/(SICI)1097-4598(200004)23:4<600::AID-MUS20>3.0.CO;2-D

Chicago

Laidlaw, Douglass H., Martin Bilodeau, Roger M. Enoka, D H Laidlaw, M Bilodeau, and R M Enoka. 2000. “Steadiness Is Reduced and Motor Unit Discharge Is More Variable in Old Adults.” Muscle & Nerve 23 (4): 600–612. doi:10.1002/(SICI)1097-4598(200004)23:4<600::AID-MUS20>3.0.CO;2-D.