APA Citation

(1987). The International language Esperanto 1887-1987: Towards the second century. --. Rotterdam: Universal Esperanto Association.

Chicago Style Citation

The International Language Esperanto 1887-1987: Towards the Second Century. --. Rotterdam: Universal Esperanto Association, 1987.

MLA Citation

The International Language Esperanto 1887-1987: Towards the Second Century. --. Rotterdam: Universal Esperanto Association, 1987.

Warning: These citations may not always be 100% accurate.