Cita APA (7a ed.)

World Congress of Asthmology. (1991). XIIIth World Congress of Asthmology, 1990, October 21(sun.)-25(thu.), Maebashi Japan: Book of abstracts : Interasma'90. s.n.

Cita Chicago Style (17a ed.)

World Congress of Asthmology. XIIIth World Congress of Asthmology, 1990, October 21(sun.)-25(thu.), Maebashi Japan: Book of Abstracts : Interasma'90. [S.l.: s.n, 1991.

Cita MLA (9a ed.)

World Congress of Asthmology. XIIIth World Congress of Asthmology, 1990, October 21(sun.)-25(thu.), Maebashi Japan: Book of Abstracts : Interasma'90. s.n, 1991.