APA aipamena

Ploog, B. O., & Zeigler, H. P. (1997). Key-peck probability and topography in a concurrent variable-interval variable-interval schedule with food and water reinforcers.

Chicago Style aipamena

Ploog, B O., and H P. Zeigler. Key-peck Probability and Topography in a Concurrent Variable-interval Variable-interval Schedule With Food and Water Reinforcers. 1997.

MLA aipamena

Ploog, B O., and H P. Zeigler. Key-peck Probability and Topography in a Concurrent Variable-interval Variable-interval Schedule With Food and Water Reinforcers. 1997.