Trapkus, C., Troester, R. R., & Quilty, C. (1989). Oral history interview with Charles Trapkus.
Chicago Style aipamenaTrapkus, Chuck, Rosalie Riegle Troester, and Charles Quilty. Oral History Interview with Charles Trapkus. 1989.
MLA aipamenaTrapkus, Chuck, et al. Oral History Interview with Charles Trapkus. 1989.
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