APA (7th ed.) Citation

Henriksen G. (1906). Sundry Geological problems. Christiania, Grondahl, 1906.

Chicago Style (17th ed.) Citation

Henriksen G. Sundry Geological Problems. Christiania, Grondahl, 1906, 1906.

MLA (9th ed.) Citation

Henriksen G. Sundry Geological Problems. Christiania, Grondahl, 1906, 1906.

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