Cita APA (7th ed.)

Wallach, P. I., & Helper, D. E. Reading construction drawings (2nd ed.).

Cita Chicago (17th ed.)

Wallach, Paul I., i Donald E. Helper. Reading Construction Drawings. 2nd ed.

Cita MLA (9th ed.)

Wallach, Paul I., i Donald E. Helper. Reading Construction Drawings. 2nd ed.