APA
Pinn F. M. J., . (1977). Seashells of East Africa. London: Collings.
Chicago
Pinn F M J, . 1977. Seashells of East Africa. London: Collings.
Harvard
Pinn F. M. J., . (1977). Seashells of East Africa. London: Collings.
MLA
Pinn F M J, . Seashells of East Africa. London: Collings. 1977.