Cita APA (7th ed.)

SAXENA, O. P. (1985). MODERN TEXTBOOK OF PROTOCHORDATA (3rd ed.). S. CHAND & COMPANY LTD..

Cita Chicago (17th ed.)

SAXENA, O. P. MODERN TEXTBOOK OF PROTOCHORDATA. 3rd ed. New Delhi: S. CHAND & COMPANY LTD., 1985.

Cita MLA (9th ed.)

SAXENA, O. P. MODERN TEXTBOOK OF PROTOCHORDATA. 3rd ed. S. CHAND & COMPANY LTD., 1985.