Penggayaan APA

LIBBY, James R., PERKINS, Norman D.. (1976). Modern prestressed concrete highway bridge superstructures : . San Diego: Grantville.

Chicago Style

LIBBY, James R., PERKINS, Norman D.. Modern prestressed concrete highway bridge superstructures :. San Diego: Grantville, 1976. Buku.

MLA Style

LIBBY, James R., PERKINS, Norman D.. Modern prestressed concrete highway bridge superstructures :. San Diego: Grantville, 1976. Buku.

Turabian Style

LIBBY, James R., PERKINS, Norman D.. Modern prestressed concrete highway bridge superstructures :. San Diego: Grantville, 1976. Buku.