Howell, S. N. G. (2018). Peterson guide to bird identification -- in 12 steps. Houghton Mifflin Harcourt.
Cita Chicago Style (17a ed.)Howell, Steve N. G. Peterson Guide to Bird Identification -- in 12 Steps. Boston: Houghton Mifflin Harcourt, 2018.
Cita MLA (8a ed.)Howell, Steve N. G. Peterson Guide to Bird Identification -- in 12 Steps. Houghton Mifflin Harcourt, 2018.
Precaución: Estas citas no son 100% exactas.