APA

Ledergerber C, . (1991). Proposed international workshop on south American Archeology: Towars a re - evaluation of the " Formative " stage. Washington Estados Unidos: [s.n.].

Chicago

Ledergerber C, . 1991. Proposed international workshop on south American Archeology: Towars a re - evaluation of the " Formative " stage. Washington Estados Unidos: [s.n.].

Harvard

Ledergerber C, . (1991). Proposed international workshop on south American Archeology: Towars a re - evaluation of the " Formative " stage. Washington Estados Unidos: [s.n.].

MLA

Ledergerber C, . Proposed international workshop on south American Archeology: Towars a re - evaluation of the " Formative " stage. Washington Estados Unidos: [s.n.]. 1991.