APA-viite (7. p.)

Heiser, J., & Hakansson, H. (2003). Henrik Hakansson: An introduction to the birds.

Chicago-viite (17. p.)

Heiser, Jörg, ja Henrik Hakansson. Henrik Hakansson: An Introduction to the Birds. Amsterdam [u.a.], 2003.

MLA-viite (8. p.)

Heiser, Jörg, ja Henrik Hakansson. Henrik Hakansson: An Introduction to the Birds. 2003.