APA (7th ed.) Zitazioa

(1940). Nature recreation: Group guidance for the out-of-doors / by William ("Cap'n Bill") Gould Vinal.

Chicago Style (17th ed.) Zitazioa

Nature Recreation: Group Guidance for the Out-of-doors / by William ("Cap'n Bill") Gould Vinal. 1940.

MLA (9th ed.) Zitazioa

Nature Recreation: Group Guidance for the Out-of-doors / by William ("Cap'n Bill") Gould Vinal. 1940.