Meggers Y., B. J., Evan's, C., & Estrada, E. (1965). Early formative period of coastal Ecuador: The Valdivia and Machalilla phases (Primera edición.). Smithsonian Institution.
Čikaški stil citiranja (17. izdanje)Meggers Y., Betty J., Clifford Evan's, i Emilio Estrada. Early Formative Period of Coastal Ecuador: The Valdivia and Machalilla Phases. Primera edición. Washington: Smithsonian Institution, 1965.
MLA način citiranja (8. izdanje)Meggers Y., Betty J., et al. Early Formative Period of Coastal Ecuador: The Valdivia and Machalilla Phases. Primera edición. Smithsonian Institution, 1965.
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