APA (7e ed.) Bronvermelding

Leach R. Robert. (1995). How to Improve Your Memory. London, National Extension College, 1995.

Chicago (17e ed.) Bronvermelding

Leach R. Robert. How to Improve Your Memory. London, National Extension College, 1995, 1995.

MLA (9e ed.) Bronvermelding

Leach R. Robert. How to Improve Your Memory. London, National Extension College, 1995, 1995.

Let op: Deze citaties zijn niet altijd 100% accuraat.