Cita APA (7a ed.)

Kukal, Z., Malina, J., Malinova, R., & Tesarova, H. (1989). Man E Stone. Geological Survey.

Cita Chicago Style (17a ed.)

Kukal, Zdenek, Jaroslav Malina, Renata Malinova, y Helena Tesarova. Man E Stone. Prague: Geological Survey, 1989.

Cita MLA (8a ed.)

Kukal, Zdenek, et al. Man E Stone. Geological Survey, 1989.