Gaya APA

Marshall, W., , . (1971). Solution of problems in structures a problem-based textbook . [s.l]: [s.l]: Pitman Publishing; 1971.

Gaya MLA

Marshall, W.T.., , . "Solution of problems in structures a problem-based textbook". [s.l]: [s.l]: Pitman Publishing; 1971, 1971. Text.