APA-Zitierstil (7. Ausg.)

Wren, D. (1948). They enriched humanity: Adventures of the 19th century. Skilton.

Chicago-Zitierstil (17. Ausg.)

Wren, David. They Enriched Humanity: Adventures of the 19th Century. London: Skilton, 1948.

MLA-Zitierstil (9. Ausg.)

Wren, David. They Enriched Humanity: Adventures of the 19th Century. Skilton, 1948.