Gaya APA

Hyman, L, H. (1955). The invertebrates: echinodermata (1). New York, USA: McGraw-hillbook company.

Gaya MLA

Hyman, Libbie, Henrietta. "The invertebrates: echinodermata". 1 New York, USA: McGraw-hillbook company, 1955. Agribisnis.