Cita APA (7th ed.)

Buck, C. H., & Butler, D. M. (1970). Economic product design. Collins.

Cita Chicago (17th ed.)

Buck, Christopher Hearn, i D. M. Butler. Economic Product Design. London: Collins, 1970.

Cita MLA (8th ed.)

Buck, Christopher Hearn, i D. M. Butler. Economic Product Design. Collins, 1970.