Cita APA (7th ed.)

Lansing, J. B., & Morgan, J. N. (1971). Economic survey methods. Survey Research Center, University of Michigan].

Cita Chicago (17th ed.)

Lansing, John B., i James N. Morgan. Economic Survey Methods. [Ann Arbor: Survey Research Center, University of Michigan], 1971.

Cita MLA (9th ed.)

Lansing, John B., i James N. Morgan. Economic Survey Methods. Survey Research Center, University of Michigan], 1971.