Citazione Stile APA (7a Edizione)

(2017). Ruhrgebiet Industrial Cultural Landscape: Draft statement of outstanding universal value. Proposal for an update of the German tentative list for UNESCO world heritage (1a. ed.). SIG.

Citazione stile Chigago Style (17a edizione)

Ruhrgebiet Industrial Cultural Landscape: Draft Statement of Outstanding Universal Value. Proposal for an Update of the German Tentative List for UNESCO World Heritage. 1a. ed. s.l: SIG, 2017.

Citatione MLA (9a ed.)

Ruhrgebiet Industrial Cultural Landscape: Draft Statement of Outstanding Universal Value. Proposal for an Update of the German Tentative List for UNESCO World Heritage. 1a. ed. SIG, 2017.