APA (7th ed.) Citation

Weeks, D. L. (1981). Motor-output variability in a ballistic task. [publisher not identified].

Chicago Style (17th ed.) Citation

Weeks, Douglas Lane. Motor-output Variability in a Ballistic Task. [Place of publication not identified]: [publisher not identified], 1981.

MLA (9th ed.) Citation

Weeks, Douglas Lane. Motor-output Variability in a Ballistic Task. [publisher not identified], 1981.