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.