APA Citation

ENGELN, O. V. (1942). Geomorphology - Systematic and regional - O.D Van Engeln. The Macmillan company.

Chicago Style Citation

ENGELN, O.D Van. Geomorphology - Systematic and Regional - O.D Van Engeln. The Macmillan company, 1942.

MLA Citation

ENGELN, O.D Van. Geomorphology - Systematic and Regional - O.D Van Engeln. The Macmillan company, 1942.

Warning: These citations may not always be 100% accurate.