APA (7e ed.) Bronvermelding

Seferian, H. (2004). Hardscapinghigh, style, low maintenance outdoor spacesHaig Seferian. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Seferian, Haig. Hardscapinghigh, Style, Low Maintenance Outdoor SpacesHaig Seferian. McGraw-Hill, 2004.

MLA (8e ed.) Bronvermelding

Seferian, Haig. Hardscapinghigh, Style, Low Maintenance Outdoor SpacesHaig Seferian. McGraw-Hill, 2004.

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