Cita APA (7a ed.)
Zeleny, R. O. (1989). Science Year 1990: <The> World Book Annual Science Supplement. A review of Science and Technology During the 1989 School Year (1. ed.). World Book.
Cita Chicago Style (17a ed.)
Zeleny, Robert O. Science Year 1990: <The> World Book Annual Science Supplement. A Review of Science and Technology During the 1989 School Year. 1. ed. Chicago: World Book, 1989.
Cita MLA (9a ed.)
Zeleny, Robert O. Science Year 1990: <The> World Book Annual Science Supplement. A Review of Science and Technology During the 1989 School Year. 1. ed. World Book, 1989.
Precaución: Estas citas no son 100% exactas.