APA

Bergstrom T. C., Goodman R. P., .Private demands for public goods. : .

Chicago

Bergstrom Theodore C, Goodman Robert P, .Private demands for public goods. : .

Harvard

Bergstrom T. C., Goodman R. P., .Private demands for public goods. : .

MLA

Bergstrom Theodore C, Goodman Robert P, .: . .