APA

Vigeveno H. S., . (1986). 13 men who changed the world. Ventura, Calif., U.S.A: Regal Books.

Chicago

Vigeveno H S, . 1986. 13 men who changed the world. Ventura, Calif., U.S.A: Regal Books.

Harvard

Vigeveno H. S., . (1986). 13 men who changed the world. Ventura, Calif., U.S.A: Regal Books.

MLA

Vigeveno H S, . 13 men who changed the world. Ventura, Calif., U.S.A: Regal Books. 1986.