Cita APA (7a ed.)

Haapala, P. (1936). On serpentine rocks in northern Karelia: With 21 figures in text and two maps. Government Press.

Cita Chicago Style (17a ed.)

Haapala, Paavo. On Serpentine Rocks in Northern Karelia: With 21 Figures in Text and Two Maps. Helsinki: Government Press, 1936.

Cita MLA (8a ed.)

Haapala, Paavo. On Serpentine Rocks in Northern Karelia: With 21 Figures in Text and Two Maps. Government Press, 1936.