Gaya APA

Penzien, R, W, C. (1993). DYNAMICS OF STRUCTURES Second Edition (^a2 ^bjilid 1). New York: McGRAW-HILL.INC..

Gaya MLA

Penzien, Ray, W., Clough-Joseph. "DYNAMICS OF STRUCTURES Second Edition". ^a2 ^bjilid 1 New York: McGRAW-HILL.INC., 1993. Text.