Cita APA (7th ed.)

Asimov, I. (1981). Change ! : seventy-one Glimpses of: The future. Houghton Mifflin.

Cita Chicago (17th ed.)

Asimov, Isaac. Change ! : Seventy-one Glimpses of: The Future. Boston: Houghton Mifflin, 1981.

Cita MLA (9th ed.)

Asimov, Isaac. Change ! : Seventy-one Glimpses of: The Future. Houghton Mifflin, 1981.