APA (7th ed.) Citation

Parks, H. B. Hand-book on shells: Port Aransas, Texas. [publisher not identified].

Chicago Style (17th ed.) Citation

Parks, Hal B. Hand-book on Shells: Port Aransas, Texas. [Place of publication not identified]: [publisher not identified].

MLA (9th ed.) Citation

Parks, Hal B. Hand-book on Shells: Port Aransas, Texas. [publisher not identified].