Sloan, P. R. Darwin's Invertebrate program, 1826-1836: Preconditions for transformism / Phillip R. Sloan. The Darwinian heritage : [incl. proceed. of the Charles Darwin Centenary Conference, Florence Center for the History and Philosophy of Science, June 1982].(1985).
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিSloan, Phillip R. "Darwin's Invertebrate Program, 1826-1836: Preconditions for Transformism / Phillip R. Sloan." The Darwinian Heritage : [incl. Proceed. of the Charles Darwin Centenary Conference, Florence Center for the History and Philosophy of Science, June 1982].(1985) .
M.L.A (8 ম সংস্করণ) উদ্ধৃতিSloan, Phillip R. "Darwin's Invertebrate Program, 1826-1836: Preconditions for Transformism / Phillip R. Sloan." The Darwinian Heritage : [incl. Proceed. of the Charles Darwin Centenary Conference, Florence Center for the History and Philosophy of Science, June 1982].(1985), .