APA

Clark H. L., . (1948). A Report on the Echini of the Warmer Eastern Pacific, Based on the Collections of the Velero III. Los Angeles, California: The University of Southern California Press.

Chicago

Clark Hubert Lyman, . 1948. A Report on the Echini of the Warmer Eastern Pacific, Based on the Collections of the Velero III. Los Angeles, California: The University of Southern California Press.

Harvard

Clark H. L., . (1948). A Report on the Echini of the Warmer Eastern Pacific, Based on the Collections of the Velero III. Los Angeles, California: The University of Southern California Press.

MLA

Clark Hubert Lyman, . A Report on the Echini of the Warmer Eastern Pacific, Based on the Collections of the Velero III. Los Angeles, California: The University of Southern California Press. 1948.