Twins and supertwins /
by Amram Scheinfeld with special editing by Arthur Falek and others. Illustrated by the author.

APA Citation

Scheinfeld, A. (1973). Twins and supertwins. Baltimore: Penguin Books.

MLA Citation

Scheinfeld, Amram, 1897-1979. Twins And Supertwins. Baltimore: Penguin Books, 1973.

Warning: These citations may not always be complete (especially for serials).