APA-čujuhus (7. p.)
Meggers, B. J., Evans, C., & Estrada, E. (1965). Early formative period of coastal Ecuador: The Valdivio and Machalilla phases. Smithsonian Institution.
Chicago-čujuhus (17. p.)
Meggers, Betty J., Clifford Evans, juo Emilio Estrada. Early Formative Period of Coastal Ecuador: The Valdivio and Machalilla Phases. Washington: Smithsonian Institution, 1965.
MLA-čujuhus (9. p.)
Meggers, Betty J., et al. Early Formative Period of Coastal Ecuador: The Valdivio and Machalilla Phases. Smithsonian Institution, 1965.
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