Instituto Brasileiro de Informação em Ciência e Tecnologia

Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (1935). Planning and Civic Comment. National Conference on State Parks.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Planning and Civic Comment. Washington: National Conference on State Parks, 1935.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Planning and Civic Comment. National Conference on State Parks, 1935.