JOHNSON , R. (1967). Structural Concrete R.p. Johnson. McGraw-Hill.
Chicago Style aipamenaJOHNSON , R.P. Structural Concrete R.p. Johnson. McGraw-Hill, 1967.
MLA aipamenaJOHNSON , R.P. Structural Concrete R.p. Johnson. McGraw-Hill, 1967.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.