APA Style

NORDHAUS, W, D., SAMUELSON, P, A. (2001). Economics, 17th. Ed. (17). Boston: McGraw-Hill/Irwin.

MLA Style

NORDHAUS, WILLIAM, D.., SAMUELSON, PAUL, A.. "Economics, 17th. Ed.". 17 Boston: McGraw-Hill/Irwin, 2001. Text.