Whitfield R. P. Robert Parr. (1892). Gasteropoda and Cephalopoda of the Raritan Clays and Greensand marls of New Jersey. Washington, Governmext Printing Office, 1892.
Citazione stile Chigago Style (17a edizione)Whitfield R. P. Robert Parr. Gasteropoda and Cephalopoda of the Raritan Clays and Greensand Marls of New Jersey. Washington, Governmext Printing Office, 1892, 1892.
Citatione MLA (9a ed.)Whitfield R. P. Robert Parr. Gasteropoda and Cephalopoda of the Raritan Clays and Greensand Marls of New Jersey. Washington, Governmext Printing Office, 1892, 1892.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.