एपीए उद्धरण

Alvarado, G. E. (2023). Biography of Eng. Rodolfo Madrigal Gómez (1929-2023): Father of geomorphology in Costa Rica.

शिकागो स्टाइल उद्धरण

Alvarado, Guillermo E. Biography of Eng. Rodolfo Madrigal Gómez (1929-2023): Father of Geomorphology in Costa Rica. 2023.

एमएलए उद्धरण

Alvarado, Guillermo E. Biography of Eng. Rodolfo Madrigal Gómez (1929-2023): Father of Geomorphology in Costa Rica. 2023.