Cita APA

Otto, J. H., & Towle, A. Biology investigations / James H. Otto, Albert Towle, W. David Otto. New York : Holt, Rinehart and Winston.

Citación estilo Chicago

Otto, James H., y Albert Towle. Biology Investigations / James H. Otto, Albert Towle, W. David Otto. New York : Holt, Rinehart and Winston.

Cita MLA

Otto, James H., y Albert Towle. Biology Investigations / James H. Otto, Albert Towle, W. David Otto. New York : Holt, Rinehart and Winston.