Gaya APA

Ayres, F, J. (1972). Schaum s outline of Theory and problems of differential equations in si metric unit (1972). : New York : Mc Graw Hill Interl Book Company,.

Gaya MLA

Ayres, Frank, J. "Schaum s outline of Theory and problems of differential equations in si metric unit". 1972 : New York : Mc Graw Hill Interl Book Company,, 1972. Text.