APA (7th ed.) Zitazioa

(1928). Extra-classroom activities in elementary and secondary schools, by Riverda Harding Jordan.

Chicago Style (17th ed.) Zitazioa

Extra-classroom Activities in Elementary and Secondary Schools, by Riverda Harding Jordan. 1928.

MLA (9th ed.) Zitazioa

Extra-classroom Activities in Elementary and Secondary Schools, by Riverda Harding Jordan. 1928.