Petikan Anatomi_perbandingan

  1. ↑ Campbell, Neil A.; Reece, Jane B. (2002). Biology. San Francisco, CA: Benjamin Cummings. m/s. 438–439.  Parameter |month= tidak diketahui diabaikan (bantuan)
  2. ↑ Kardong, Kenneth V. (2015). Vertebrates: Comparative Anatomy, Function, Evolution. New York: McGraw-Hill Education. m/s. 15–16. ISBN 978-0-07-802302-6.