Cita APA (7th ed.)
(1982). Science year :1978: The World book science annual. Field Enterprises Educational Corporation.
Cita Chicago (17th ed.)
Science Year :1978: The World Book Science Annual. Chicago: Field Enterprises Educational Corporation, 1982.
Cita MLA (9th ed.)
Science Year :1978: The World Book Science Annual. Field Enterprises Educational Corporation, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.