Cita APA (7th ed.)

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.

Cita Chicago (17th ed.)

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.

Cita MLA (8th ed.)

Meggers Y., Betty J., et al. Early Formative Period of Coastal Ecuador: The Valdivia and Machalilla Phases. Primera edición. Smithsonian Institution, 1965.