APA (7e ed.) Bronvermelding
Guinness, A. E. (1977). Joy of nature: How to observe and appreciate the great outdoors. Reader's Digest Association.
Chicago (17e ed.) Bronvermelding
Guinness, Alma E. Joy of Nature: How to Observe and Appreciate the Great Outdoors. Pleasantville, N.Y.: Reader's Digest Association, 1977.
MLA (9e ed.) Bronvermelding
Guinness, Alma E. Joy of Nature: How to Observe and Appreciate the Great Outdoors. Reader's Digest Association, 1977.
Let op: Deze citaties zijn niet altijd 100% accuraat.