Published in Proceedings of The United States National Museum, in 1968, in volume 122, issue 3587, pages 1-10
Numerical approaches to the relationships of certain American swimming crabs (Crustacea: Portunidae)
Published in Proceedings of The United States National Museum, in 1968, in volume 124, pages 1-25
Published in Proceedings of the United States National Museum, in 1968, in volume 124, issue 3629, pages 1-8
Published in Proceedings of the United States National Museum, in 1968, in volume 124, issue 3647, pages 1-78
Published in Proceedings of The United States National Museum, in 1968, in volume 125, pages 1-12
Published in Proceedings of the United States National Museum, in 1968, in volume 125, issue 3651, pages 1-16
Published in Proceedings of the United States National Museum, in 1968, in volume 125, issue 3659, pages 1-19
Published in Proceedings of the United States National Museum, in 1968, in volume 125, issue 3664, pages 1-33