Cita APA (7th ed.)
Foster, M., & Foster, M. (1989). The monarchs are flying. Pandora Pr.
Cita Chicago (17th ed.)
Foster, Marion, i Marion Foster. The Monarchs Are Flying. London: Pandora Pr, 1989.
Cita MLA (9th ed.)
Foster, Marion, i Marion Foster. The Monarchs Are Flying. Pandora Pr, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.