APA (7e ed.) Bronvermelding

Locher, J. L., & Boyle, M. (1978). Mark Boyle's journey to the surface of the earth: J.L. Locher. Mayer.

Chicago (17e ed.) Bronvermelding

Locher, Johannes L., en Mark Boyle. Mark Boyle's Journey to the Surface of the Earth: J.L. Locher. Stuttgart [u.a.]: Mayer, 1978.

MLA (8e ed.) Bronvermelding

Locher, Johannes L., en Mark Boyle. Mark Boyle's Journey to the Surface of the Earth: J.L. Locher. Mayer, 1978.