Ryan, P. T. (1993). A comparison of physiologic responses to forward and retrograde simulated stair stepping on the StairMaster 4000 PT. [publisher not identified].
Chicago Style (17th ed.) CitationRyan, Patrick T. A Comparison of Physiologic Responses to Forward and Retrograde Simulated Stair Stepping on the StairMaster 4000 PT. [Place of publication not identified]: [publisher not identified], 1993.
MLA (9th ed.) CitationRyan, Patrick T. A Comparison of Physiologic Responses to Forward and Retrograde Simulated Stair Stepping on the StairMaster 4000 PT. [publisher not identified], 1993.
Warning: These citations may not always be 100% accurate.