Cita APA (7a ed.)
Zim, Herbert Spencer, & Smith, H. M. (1956). REPTILES AND AMPHIBIANS.
Cita estilo Chicago (17a ed.)
Zim, Herbert Spencer, y Hobart Muir Smith. REPTILES AND AMPHIBIANS. 1956.
Cita MLA (9a ed.)
Zim, Herbert Spencer, y Hobart Muir Smith. REPTILES AND AMPHIBIANS. 1956.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.